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Westford: May 2025
LOCAL CLIMATOLOGICAL DATA
Monthly Summary
May 2025
Station: Westford
Latitude: 44° 37' 38" N Longitude: 73° 02' 30" W Elevation (ground): 850 feet Time Zone: Eastern
+--+-------------------------------+----+---------+---------+--+-----------+--------------------+-----------------------------+------+
| | Temperature | |Deg. Days|Precip Ty| | Precip | Pressure | Wind |Solar |
| +------+------+------+------+---+ Hu-+----+----+1 fog | S+-----+-----+ Adj. to Sea Level +----+----+---+-------+-------+------+
| | M | M | A | | |mid-| H | C |2 hvy fog| n| | Ice +------+------+------+ Avg| Res|Res| Peak |2Minute| Mean |
| | a | i | v | | D | ity| e | o |3 thunder| o|Water| plts| | | | | | +---+---+---+---+ W |
| | x | n | e | | e | | a | o |4 ice plt| w| | | | | | S | S | | S | | S | | a |
| D| i | i | r | M | w | M | t | l |5 hail | | E | S | | | M | p | p | | p | | p | | t |
| a| m | m | a | e | | e | i | i |6 glaze | C| q | n | M | M | e | e | e | D | e | D | e | D | t |
| t| u | u | g | a | P | a | n | n |7 duststm| v| u | o | a | i | a | e | e | i | e | i | e | i | s |
| e| m | m | e | n | t | n | g | g |8 smk, hz| r| v | w | x | n | n | d | d | r | d | r | d | r | m² |
| | | | | | | | | |9 blw snw| | | | | | | | | | | | | | |
| 1| 2 | 3 | 4A | 4B | 5 | 6 | 7 | 8 | 9 |10| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18| 19| 20| 21| 22| 23 |
+--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
|01| 68.2 | 29.5*| 48.8 | 49.9 | 32| 56| 16| 0|.........| 0| 0.08| 0.0| 30.18| 29.89|30.064| 0.8| 0.6|237| 10| E| 6| 66| 273 |
|02| 71.7 | 47.6 | 59.6 | 59.3 | 54| 82| 5| 0|.........| 0| 0.36| 0.0| 29.90| 29.67|29.735| 4.1| 3.9|178| 27|WSW| 13|239| 138 |
|03| 62.2 | 48.7 | 55.5 | 52.4 | 48| 85| 9| 0|.........| 0| 0.17| 0.0| 29.93| 29.78|29.864| 0.9| 0.5|304| 15|WSW| 9|260| 75 |
|04| 59.2 | 47.0 | 53.1 | 52.2 | 49| 89| 12| 0|.........| 0| 0.21| 0.0| 30.06| 29.91|29.973| 0.1| 0.1|350| 7| N| 3| 7| 91 |
|05| 66.2 | 48.7 | 57.4 | 57.5 | 52| 82| 7| 0|.........| 0| T | 0.0| 30.22| 30.05|30.176| 1.0| 0.7|169| 14| SE| 7|166| 121 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|06| 71.5 | 55.2 | 63.3 | 61.5 | 56| 83| 1| 0|.........| 0| 0.08| 0.0| 30.19| 29.86|30.029| 2.1| 2.1|154| 20|SSE| 10|138| 154 |
|07| 66.0 | 49.5 | 57.8 | 58.6 | 53| 81| 7| 0|.........| 0| 0.23| 0.0| 29.94| 29.80|29.841| 3.4| 2.8|191| 22|SSE| 12|158| 149 |
|08| 49.8 | 43.6 | 46.7 | 46.5 | 44| 90| 18| 0|.........| 0| 0.07| 0.0| 30.14| 29.94|30.057| 0.9| 0.8|333| 14| W| 9|281| 71 |
|09| 48.2 | 42.8 | 45.5 | 45.3 | 44| 94| 19| 0|.........| 0| 1.04| 0.0| 30.13| 29.92|30.036| 0.3| 0.2|337| 8| N| 4|339| 41 |
|10| 56.2 | 43.6 | 49.9 | 48.3 | 47| 94| 15| 0|.........| 0| 0.24| 0.0| 30.00| 29.84|29.896| 2.0| 1.3|256| 16|WNW| 8|275| 70 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|11| 58.9 | 38.2 | 48.6 | 47.7 | 35| 64| 16| 0|.........| 0| 0.00| 0.0| 30.30| 30.00|30.230| 2.7| 2.4|293| 19| W| 12|273| 312 |
|12| 76.3 | 38.9 | 57.6 | 57.3 | 39| 54| 7| 0|.........| 0| 0.00| 0.0| 30.32| 30.05|30.159| 2.6| 1.8|184| 26|SSE| 14|182| 252 |
|13| 80.4 | 44.4 | 62.4 | 63.8 | 46| 56| 3| 0|.........| 0| 0.00| 0.0| 30.18| 30.03|30.110| 1.3| 1.2|170| 17| S| 7|166| 251 |
|14| 77.9 | 51.5 | 64.7 | 65.6 | 55| 70| 0| 0|.........| 0| 0.00| 0.0| 30.09| 29.95|30.033| 2.5| 2.4|194| 21| S| 10|235| 275 |
|15| 81.4 | 57.1 | 69.3 | 68.6 | 61| 77| 0| 4|.........| 0| 0.00| 0.0| 29.95| 29.70|29.814| 1.5| 1.4|192| 17|SSE| 8|225| 269 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|16| 84.0*| 58.1 | 71.1*| 70.0 | 62| 79| 0| 6|..3......| 0| 0.01| 0.0| 29.71| 29.53|29.618| 2.1| 2.1|189| 20| S| 9|174| 254 |
|17| 73.7 | 55.2 | 64.4 | 62.8 | 61| 93| 0| 0|..3......| 0| 1.15| 0.0| 29.57| 29.31|29.440| 1.0| 0.8|188| 29|WSW| 14|237| 70 |
|18| 60.7 | 43.1 | 51.9 | 52.4 | 50| 93| 13| 0|.........| 0| 0.78| 0.0| 29.65| 29.39|29.452| 3.2| 2.9|253| 22|WNW| 12|258| 109 |
|19| 44.3 | 39.5 | 41.9*| 42.2 | 41| 94| 23| 0|.........| 0| 0.66| 0.0| 29.93| 29.64|29.787| 3.5| 3.3|277| 22|WNW| 10|268| 62 |
|20| 47.8 | 38.9 | 43.3 | 43.3 | 41| 92| 21| 0|.........| 0| 0.01| 0.0| 30.06| 29.92|30.001| 0.4| 0.4|316| 12|NNW| 4|349| 64 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|21| 62.5 | 44.7 | 53.6 | 51.2 | 45| 81| 11| 0|.........| 0| 0.00| 0.0| 30.05| 29.93|29.986| 0.6| 0.5|177| 10|SSE| 5|239| 152 |
|22| 51.2 | 41.6 | 46.4 | 46.2 | 41| 81| 18| 0|.........| 0| 0.07| 0.0| 29.97| 29.84|29.902| 0.9| 0.9|135| 19|SSE| 6|149| 81 |
|23| 48.2 | 40.6 | 44.4 | 44.0 | 42| 93| 20| 0|.........| 0| 0.38| 0.0| 29.84| 29.73|29.758| 0.0| 0.0|301| 4| W| 2|284| 66 |
|24| 50.3 | 42.2 | 46.3 | 45.0 | 43| 93| 19| 0|.........| 0| 0.25| 0.0| 29.94| 29.76|29.842| 0.9| 0.8|274| 15|NNW| 6|272| 102 |
|25| 60.0 | 44.4 | 52.2 | 50.2 | 46| 87| 13| 0|.........| 0| 0.03| 0.0| 30.08| 29.93|30.003| 1.1| 1.0|284| 16|NNW| 7|264| 134 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|26| 72.8 | 40.1 | 56.5 | 56.2 | 47| 76| 8| 0|.........| 0| 0.00| 0.0| 30.21| 30.07|30.148| 0.5| 0.4|295| 13| N| 7|273| 294 |
|27| 79.3 | 44.3 | 61.8 | 61.9 | 48| 65| 3| 0|.........| 0| 0.00| 0.0| 30.29| 30.18|30.231| 1.0| 0.8|231| 14| W| 7|257| 321 |
|28| 80.5 | 45.4 | 63.0 | 64.1 | 50| 65| 2| 0|.........| 0| 0.00| 0.0| 30.24| 30.06|30.159| 0.9| 0.8|227| 11| W| 7|271| 303 |
|29| | | | | | | | | | | | | | | | | | | | | | | |
|30| | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | |
|31| | | | | | | | | | | | | | | | | | | | | | | |
+--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- |
+------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+
|1809.4|1264.4|------|------|---|----| 286| 10| Days | 5.82| 0.0| 30.32| 29.31|29.945| 1.5| 0.9|215| 29|WSW| 14|237| ---- |
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg |
+------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+
| 64.6| 45.2| 54.9 | 54.6 | 48|80.1|----|----|≥.01 Inch 18|18.88|107.4| 12 | 17 |------|----|----|---| 17 | 17 | 157|
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+
| | Season |Snow, Ice | | |
| Number of Days | to Date |≥1.0 Inch 0| Greatest in 24 Hours and Dates | Greatest Depth on Ground |
+------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice |
| Max Temperature | Min Temperature |7210| 11|Thunder 2|Precipitation | Snow, Ice Plts | and Date |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+
| ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 1.21| 17-18| 0.0 | - | 0 | - |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+
| 0 | 0 | 1 | 0 |----|----| Clear 5 Partly Cloudy 6 Cloudy 17 |
+--------+---------+--------+--------+----+----+------------------------------------------+
NOTES:
Units: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches.
Column 4A: value is (MAX+MIN) / 2.
Data in columns 4B, 5, 6, 15, 16, 23 are updated continuously, there by achieving a "true" mean.
Column 5: Dew point is calculated from temperature and humidity and is continuously averaged for 24 hours.
Columns 7, 8: Degree Days heating base is 65°F, cooling base is 65°F.
Data in columns 9, 10, 12 are entered manually by the station observer.
Columns 17-18: Resultant wind is calculated by the vector sum of continuous wind observations.
OBSERVATIONS AT 3-HOUR INTERVALS
May 2025: Westford
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+
| | | | | | | | | | | | | | | | | | | | | | |
| | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind |
| | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+
| | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | |
| | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | |
| | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | |
| | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | |
| | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | |
| H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G |
| o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u |
| u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s |
| r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 1 | MAY 2 | MAY 3 |
| | | |
|00| 0|30.13| 0.00| 38| 30| 74|04| 0| 0| 0|29.90| 0.00| 48| 45| 89|20| 0| 0| 0|29.78| 0.00| 62| 54| 74|24| 4| 9|
|03| 0|30.15| 0.00| 33| 29| 85|04| 0| 0| 0|29.79| 0.00| 52| 48| 87|16| 3| 9| 0|29.80| 0.00| 57| 50| 78|32| 1| 8|
|06| 9|30.14| 0.00| 31| 27| 85|04| 0| 0| 0|29.72| 0.09| 52| 49| 90|16| 6| 13| 12|29.84| 0.00| 50| 45| 83|34| 1| 6|
|09| 490|30.17| 0.00| 49| 36| 62|01| 1| 5| 70|29.72| 0.00| 52| 50| 90|16| 7| 14| 79|29.87| 0.00| 53| 45| 74|35| 0| 5|
|12| 844|30.13| 0.00| 57| 30| 36|06| 3| 9| 265|29.71| 0.00| 61| 56| 83|18| 3| 18| 186|29.90| 0.00| 51| 48| 90|01| 0| 4|
|15| 802|30.04| 0.00| 65| 21| 19|23| 1| 7| 211|29.67| 0.00| 71| 59| 67|19| 5| 17| 269|29.87| 0.00| 51| 49| 91|34| 0| 0|
|18| 113|29.96| 0.00| 64| 36| 35|25| 0| 0| 54|29.70| 0.00| 69| 60| 71|21| 5| 13| 77|29.88| 0.00| 51| 49| 90|30| 1| 3|
|21| 0|29.90| 0.00| 58| 37| 46|17| 0| 0| 0|29.74| 0.00| 63| 56| 78|17| 0| 3| 0|29.90| 0.00| 50| 47| 90|30| 0| 4|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 4 | MAY 5 | MAY 6 |
| | | |
|00| 0|29.92| 0.00| 49| 47| 92|30| 0| 0| 0|30.05| 0.00| 50| 48| 93|32| 0| 0| 0|30.19| 0.00| 57| 52| 84|12| 1| 11|
|03| 0|29.92| 0.00| 49| 47| 94|30| 0| 0| 0|30.09| 0.00| 50| 47| 91|00| 0| 0| 0|30.13| 0.00| 56| 52| 89|17| 0| 2|
|06| 9|29.92| 0.00| 47| 45| 94|30| 0| 0| 16|30.14| 0.00| 50| 47| 90|00| 0| 0| 0|30.11| 0.16| 57| 54| 91|14| 0| 4|
|09| 130|29.96| 0.05| 50| 48| 94|30| 0| 1| 390|30.20| 0.00| 59| 51| 75|02| 3| 5| 211|30.09| 0.00| 61| 56| 85|16| 5| 10|
|12| 327|29.98| 0.00| 54| 51| 90|01| 0| 5| 450|30.22| 0.00| 65| 54| 67|24| 3| 4| 279|30.06| 0.00| 66| 59| 78|14| 1| 15|
|15| 221|29.99| 0.00| 58| 51| 79|04| 0| 0| 227|30.21| 0.00| 65| 56| 72|19| 2| 6| 872|30.00| 0.00| 69| 60| 74|12| 5| 14|
|18| 97|30.00| 0.00| 58| 52| 81|32| 0| 0| 162|30.20| 0.00| 62| 56| 81|16| 0| 5| 93|29.92| 0.00| 66| 59| 78|14| 4| 12|
|21| 0|30.05| 0.00| 52| 49| 90|32| 0| 0| 0|30.21| 0.00| 56| 51| 84|17| 0| 7| 0|29.91| 0.00| 60| 56| 86|13| 2| 5|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 7 | MAY 8 | MAY 9 |
| | | |
|00| 0|29.86| 0.00| 58| 53| 86|17| 1| 7| 0|29.94| 0.00| 50| 48| 94|27| 4| 14| 0|30.12| 0.00| 44| 41| 89|33| 0| 2|
|03| 0|29.81| 0.00| 55| 52| 90|20| 0| 0| 0|29.96| 0.00| 47| 45| 94|35| 0| 1| 0|30.08| 0.00| 43| 41| 92|30| 0| 0|
|06| 12|29.82| 0.00| 55| 51| 85|16| 4| 16| 0|30.00| 0.09| 46| 44| 94|34| 0| 3| 5|30.08| 0.00| 44| 42| 94|31| 1| 4|
|09| 339|29.84| 0.00| 59| 51| 74|18| 6| 11| 86|30.04| 0.00| 45| 44| 94|34| 1| 5| 65|30.08| 0.08| 44| 43| 95|33| 0| 3|
|12| 258|29.85| 0.00| 61| 52| 73|18| 3| 21| 127|30.08| 0.00| 46| 44| 90|27| 2| 9| 137|30.06| 0.05| 45| 44| 94|33| 0| 4|
|15| 404|29.83| 0.00| 62| 55| 77|17| 3| 12| 132|30.10| 0.00| 49| 44| 84|01| 1| 8| 79|30.03| 0.11| 46| 45| 94|30| 0| 3|
|18| 77|29.83| 0.00| 61| 55| 79|22| 0| 5| 107|30.11| 0.00| 48| 43| 82|31| 1| 11| 26|29.99| 0.00| 47| 46| 95|35| 0| 0|
|21| 0|29.87| 0.00| 57| 54| 90|23| 0| 3| 0|30.13| 0.00| 44| 40| 86|01| 0| 4| 0|29.95| 0.00| 47| 46| 95|33| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 10 | MAY 11 | MAY 12 |
| | | |
|00| 0|29.92| 0.00| 48| 47| 95|33| 0| 0| 0|30.00| 0.00| 50| 47| 89|24| 3| 9| 0|30.30| 0.00| 41| 32| 72|16| 0| 0|
|03| 0|29.88| 0.07| 47| 45| 95|33| 0| 0| 0|30.09| 0.00| 45| 40| 82|35| 6| 13| 0|30.28| 0.00| 43| 38| 82|16| 0| 2|
|06| 5|29.85| 0.00| 44| 42| 95|28| 2| 9| 14|30.18| 0.00| 40| 34| 80|31| 2| 11| 16|30.25| 0.00| 44| 34| 69|16| 2| 6|
|09| 63|29.86| 0.00| 45| 44| 96|27| 3| 10| 513|30.27| 0.00| 42| 34| 71|30| 3| 16| 492|30.22| 0.00| 57| 34| 42|17| 8| 18|
|12| 155|29.88| 0.00| 47| 46| 96|29| 3| 11| 865|30.29| 0.00| 48| 33| 55|27| 6| 16| 452|30.13| 0.00| 66| 40| 38|18| 7| 15|
|15| 260|29.90| 0.00| 50| 49| 96|27| 3| 10| 793|30.29| 0.00| 55| 35| 46|30| 2| 9| 889|30.07| 0.00| 73| 44| 36|28| 3| 9|
|18| 357|29.91| 0.00| 55| 52| 90|05| 0| 3| 336|30.28| 0.00| 57| 33| 39|26| 4| 12| 199|30.05| 0.00| 68| 42| 38|34| 1| 5|
|21| 0|29.93| 0.00| 50| 48| 93|17| 5| 10| 0|30.30| 0.00| 46| 34| 65|26| 0| 0| 0|30.09| 0.00| 57| 44| 63|00| 0| 2|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 13 | MAY 14 | MAY 15 |
| | | |
|00| 0|30.13| 0.00| 51| 43| 73|00| 0| 0| 0|30.07| 0.00| 59| 47| 64|19| 2| 6| 0|29.95| 0.00| 59| 55| 88|18| 0| 0|
|03| 0|30.13| 0.00| 45| 41| 84|00| 0| 0| 0|30.09| 0.00| 55| 47| 73|17| 0| 0| 0|29.92| 0.00| 60| 56| 88|18| 0| 0|
|06| 25|30.13| 0.00| 46| 41| 81|03| 3| 6| 18|30.08| 0.00| 52| 48| 84|12| 0| 0| 12|29.88| 0.00| 58| 54| 89|09| 0| 0|
|09| 478|30.18| 0.00| 65| 47| 53|16| 2| 5| 490|30.09| 0.00| 67| 55| 65|17| 6| 11| 571|29.87| 0.00| 70| 62| 75|19| 0| 6|
|12| 893|30.14| 0.00| 76| 47| 36|18| 5| 10| 853|30.06| 0.00| 75| 59| 59|17| 6| 13| 923|29.83| 0.00| 77| 65| 68|17| 3| 8|
|15| 345|30.10| 0.00| 76| 49| 39|16| 2| 8| 921|30.00| 0.00| 75| 61| 63|18| 4| 12| 796|29.76| 0.00| 81| 65| 59|19| 5| 12|
|18| 211|30.04| 0.00| 80| 49| 34|18| 2| 5| 330|29.98| 0.00| 75| 60| 60|20| 3| 12| 322|29.72| 0.00| 80| 62| 54|20| 2| 6|
|21| 0|30.05| 0.00| 66| 48| 52|13| 2| 7| 0|29.97| 0.00| 63| 57| 81|19| 0| 0| 0|29.72| 0.00| 66| 61| 83|16| 0| 1|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 16 | MAY 17 | MAY 18 |
| | | |
|00| 0|29.70| 0.00| 60| 57| 92|16| 0| 0| 0|29.56| 0.00| 62| 59| 91|18| 0| 3| 0|29.41| 0.00| 55| 53| 93|24| 1| 9|
|03| 0|29.71| 0.00| 60| 58| 94|17| 1| 6| 0|29.54| 0.00| 61| 59| 94|18| 1| 6| 0|29.40| 0.00| 52| 49| 92|21| 1| 7|
|06| 14|29.69| 0.00| 61| 59| 94|19| 3| 8| 23|29.50| 0.00| 63| 61| 95|16| 0| 7| 21|29.41| 0.00| 52| 51| 95|20| 1| 4|
|09| 459|29.67| 0.00| 72| 66| 81|17| 3| 8| 121|29.46| 0.00| 69| 65| 87|14| 0| 11| 227|29.40| 0.00| 54| 52| 95|19| 1| 10|
|12| 969|29.61| 0.00| 79| 67| 66|22| 4| 10| 83|29.43| 0.18| 64| 62| 93|17| 0| 7| 169|29.40| 0.00| 57| 54| 90|24| 1| 7|
|15| 928|29.55| 0.00| 83| 64| 54|21| 7| 15| 67|29.32| 0.00| 71| 67| 88|13| 0| 3| 171|29.41| 0.00| 59| 55| 88|23| 4| 11|
|18| 137|29.55| 0.00| 75| 64| 69|22| 2| 8| 18|29.37| 0.00| 59| 58| 94|36| 0| 0| 56|29.49| 0.06| 50| 48| 93|25| 6| 18|
|21| 0|29.55| 0.00| 67| 62| 84|19| 0| 2| 0|29.40| 0.00| 59| 57| 95|36| 0| 0| 0|29.58| 0.08| 46| 44| 94|25| 4| 14|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Precipitation | 0.20 | 0.26 | 0.30 | 0.32 | 0.36 | 0.37 | 0.41 | 0.50 | 0.53 | 0.54 | 0.54 | 0.54 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Date | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Time | 1050 | 1053 | 1546 | 1551 | 1112 | 1616 | 1145 | 1202 | 1220 | 1242 | 1242 | 1242 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
The precipitation amounts for the indicated time intervals may occur at any time during the month. The time indicated
is the ending time of the interval. Date and time are not entered for trace amounts.
OBSERVATIONS AT 3-HOUR INTERVALS
May 2025: Westford
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+
| | | | | | | | | | | | | | | | | | | | | | |
| | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind |
| | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+
| | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | |
| | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | |
| | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | |
| | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | |
| | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | |
| H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G |
| o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u |
| u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s |
| r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 19 | MAY 20 | MAY 21 |
| | | |
|00| 0|29.64| 0.06| 43| 42| 95|27| 5| 12| 0|29.92| 0.00| 40| 38| 94|33| 1| 11| 0|30.05| 0.00| 45| 44| 94|32| 0| 0|
|03| 0|29.67| 0.07| 43| 41| 95|28| 3| 15| 0|29.93| 0.00| 39| 37| 94|28| 0| 5| 0|30.00| 0.00| 45| 43| 94|32| 0| 0|
|06| 0|29.72| 0.00| 42| 40| 95|28| 3| 12| 12|29.95| 0.00| 39| 38| 94|27| 1| 8| 18|30.04| 0.00| 46| 44| 95|26| 0| 0|
|09| 91|29.78| 0.00| 42| 40| 94|26| 5| 19| 120|30.00| 0.00| 41| 40| 94|28| 0| 6| 274|30.01| 0.00| 52| 48| 86|12| 1| 7|
|12| 132|29.77| 0.00| 43| 40| 89|27| 2| 17| 169|30.03| 0.00| 44| 42| 92|31| 0| 8| 315|30.00| 0.00| 54| 49| 82|18| 1| 4|
|15| 144|29.81| 0.00| 44| 42| 92|24| 2| 13| 158|30.02| 0.00| 47| 43| 88|34| 2| 9| 420|29.94| 0.00| 62| 47| 60|24| 2| 7|
|18| 56|29.85| 0.12| 43| 41| 93|26| 3| 9| 40|30.04| 0.00| 48| 45| 89|30| 0| 0| 134|29.93| 0.00| 58| 47| 67|09| 0| 9|
|21| 0|29.91| 0.04| 41| 40| 94|32| 1| 9| 0|30.04| 0.00| 46| 44| 93|32| 0| 0| 0|29.95| 0.00| 49| 43| 78|35| 0| 3|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 22 | MAY 23 | MAY 24 |
| | | |
|00| 0|29.97| 0.00| 47| 40| 75|10| 0| 6| 0|29.84| 0.00| 42| 39| 92|02| 0| 0| 0|29.77| 0.00| 43| 41| 94|33| 0| 0|
|03| 0|29.93| 0.00| 46| 39| 77|16| 2| 10| 0|29.78| 0.00| 41| 39| 94|02| 0| 0| 0|29.76| 0.05| 43| 41| 95|32| 0| 2|
|06| 12|29.91| 0.00| 45| 39| 81|10| 0| 6| 11|29.76| 0.00| 41| 39| 94|02| 0| 0| 23|29.78| 0.00| 42| 41| 95|26| 0| 4|
|09| 142|29.92| 0.00| 48| 41| 75|08| 4| 12| 105|29.74| 0.00| 44| 42| 94|02| 0| 0| 367|29.83| 0.00| 46| 44| 95|34| 0| 3|
|12| 420|29.92| 0.00| 50| 42| 75|16| 1| 12| 251|29.73| 0.00| 48| 44| 89|01| 0| 0| 144|29.84| 0.00| 46| 44| 93|22| 1| 3|
|15| 179|29.88| 0.00| 50| 42| 76|09| 1| 6| 109|29.73| 0.04| 47| 45| 92|28| 0| 0| 346|29.85| 0.00| 50| 47| 88|01| 1| 8|
|18| 107|29.88| 0.00| 45| 42| 88|02| 0| 0| 97|29.75| 0.00| 47| 45| 92|28| 0| 0| 83|29.90| 0.00| 47| 45| 92|27| 1| 6|
|21| 0|29.87| 0.00| 44| 41| 90|02| 0| 0| 0|29.77| 0.00| 44| 42| 93|33| 0| 0| 0|29.92| 0.00| 46| 44| 94|28| 0| 13|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 25 | MAY 26 | MAY 27 |
| | | |
|00| 0|29.93| 0.05| 45| 43| 95|30| 1| 7| 0|30.08| 0.00| 45| 42| 92|06| 0| 0| 0|30.21| 0.00| 49| 45| 86|32| 0| 0|
|03| 0|29.94| 0.00| 45| 43| 95|27| 2| 12| 0|30.08| 0.00| 43| 41| 94|06| 0| 0| 0|30.23| 0.00| 46| 43| 91|31| 0| 0|
|06| 11|29.98| 0.00| 45| 43| 95|26| 1| 9| 18|30.12| 0.00| 41| 39| 95|06| 0| 0| 19|30.26| 0.00| 46| 44| 93|21| 0| 2|
|09| 132|30.00| 0.00| 47| 45| 95|27| 0| 3| 148|30.17| 0.00| 54| 51| 87|07| 0| 0| 536|30.29| 0.00| 64| 52| 63|18| 1| 7|
|12| 483|30.01| 0.00| 52| 48| 85|32| 2| 12| 891|30.17| 0.00| 66| 52| 61|05| 0| 7| 884|30.26| 0.00| 75| 53| 47|24| 3| 7|
|15| 176|30.01| 0.00| 59| 49| 69|27| 4| 10| 830|30.15| 0.00| 70| 50| 49|24| 2| 7| 965|30.22| 0.00| 79| 46| 31|27| 5| 10|
|18| 362|30.01| 0.00| 60| 51| 73|25| 0| 4| 367|30.15| 0.00| 71| 47| 42|33| 1| 7| 380|30.19| 0.00| 77| 44| 30|24| 2| 5|
|21| 0|30.05| 0.00| 50| 47| 90|00| 0| 0| 0|30.19| 0.00| 55| 49| 80|32| 0| 0| 0|30.19| 0.00| 58| 47| 66|24| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 28 | MAY 29 | MAY 30 |
| | | |
|00| 0|30.20| 0.00| 52| 47| 84|24| 0| 0| 0|30.07| 0.00| 61| 53| 75|15| 0| 9| | | | | | | | | |
|03| 0|30.20| 0.00| 51| 44| 79|23| 0| 1| | | | | | | | | | | | | | | | | | |
|06| 19|30.23| 0.00| 47| 44| 91|24| 0| 0| | | | | | | | | | | | | | | | | | |
|09| 536|30.23| 0.00| 68| 54| 60|17| 1| 7| | | | | | | | | | | | | | | | | | |
|12| 893|30.20| 0.00| 77| 53| 43|22| 1| 6| | | | | | | | | | | | | | | | | | |
|15| 840|30.13| 0.00| 79| 51| 37|26| 5| 11| | | | | | | | | | | | | | | | | | |
|18| 211|30.08| 0.00| 76| 51| 41|23| 2| 4| | | | | | | | | | | | | | | | | | |
|21| 0|30.06| 0.00| 60| 51| 73|22| 0| 0| | | | | | | | | | | | | | | | | | |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 31 | | |
| | | |
|00| | | | | | | | | | | |
|03| | | | | | | | | | | |
|06| | | | | | | | | | | |
|09| | | | | | | | | | | |
|12| | | | | | | | | | | |
|15| | | | | | | | | | | |
|18| | | | | | | | | | | |
|21| | | | | | | | | | | |
+--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
WEATHER NOTES SUMMARY BY HOURS
+--+-----------------------------+---------+
Wind Direction: Directions are those from which the wind is blowing, | | Averages | |
indicated in tens of degrees from true North: i.e., 09 for East, 18 for | +----+------+---+---+---+-----+Resultant|
South, 27 for West, and 00 or 36 for North. | | | | | | | | |
Wind Speed: The observed one-minute average speed in miles-per-hour. | | | | T | | | | Wind |
Wind Gust: The maximum instantaneous wind speed for the ten minute-period | | | | e | | % | W +----+----+
preceding the observation. | | | | m | D | | i | D | |
Rainfall Rate: The instantaneous rainfall rate at time of observation, | | S | P | p | e | H | n | i | |
calculated by timing consecutive pulses from the electronic rain | | u | r | e | w | u | d | r | |
gauge and interpolating this rate for one hour. | | n | e | r | | m | | e | |
| | s | s | a | P | i | S | c | S |
| H| h | s | t | o | d | p | t | p |
| o| i | u | u | i | i | e | i | e |
| u| n | r | r | n | t | e | o | e |
| r| e | e | e | t | y | d | n | d |
+--+----+------+---+---+---+-----+----+----+
|00| 0|29.952| 50| 46| 86| 0.8| 25 | 0.6|
|03| 0|29.939| 48| 45| 89| 0.8| 25 | 0.2|
|06| 13|29.946| 47| 44| 90| 1.0| 21 | 0.4|
|09| 276|29.962| 54| 48| 80| 2.2| 18 | 1.2|
|12| 458|29.953| 59| 49| 74| 2.2| 21 | 1.3|
|15| 448|29.925| 62| 50| 68| 2.6| 23 | 1.5|
|18| 165|29.920| 61| 49| 70| 1.5| 23 | 1.0|
|21| 0|29.936| 53| 48| 82| 0.5| 19 | 0.3|
+--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
May 2025: Westford
---+-----------------------------------------------------------+-----------------------------------------------------------+---
| | |
D| A.M. Hour Ending at | P.M. Hour Ending at |D
a| | |a
t+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+t
e| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |e
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
01| | | | | | | | | | | | | | | | | | | | | | |0.05|0.03|01
02|0.05|0.03|0.01| |0.03|0.02|0.08| |0.01| | | | | | |0.12|0.01| | | | | | | |02
03| | | | | | | | | | |0.06|0.02|0.02|0.03|0.03| | | | | | | | |0.01|03
04|0.05|0.03|0.02|0.02|0.01|0.01|0.01|0.02|0.03|0.01| | | | | | | | | | | | | | |04
05| | | | | | | | | | | | | | | | | | | | | | | | |05
| | | | | | | | | | | | | | | | | | | | | | | | |
06| | | | | |0.07|0.01| | | | | | | | | | | | | | | | | |06
07| | | | | | | | | | | | | | | | | | | | |0.07|0.10|0.04|0.02|07
08|0.01|0.01| | | |0.02|0.03| | | | | | | | | | | | | | | | | |08
09| | |0.01|0.01|0.02|0.01|0.02|0.08|0.09|0.05|0.06|0.06|0.05|0.06|0.09|0.11|0.06|0.04|0.02|0.04|0.04|0.06|0.03|0.03|09
10|0.04|0.02|0.06|0.04|0.03|0.02| | |0.01| | | |0.01|0.01| | | | | | | | | | |10
| | | | | | | | | | | | | | | | | | | | | | | | |
11| | | | | | | | | | | | | | | | | | | | | | | | |11
12| | | | | | | | | | | | | | | | | | | | | | | | |12
13| | | | | | | | | | | | | | | | | | | | | | | | |13
14| | | | | | | | | | | | | | | | | | | | | | | | |14
15| | | | | | | | | | | | | | | | | | | | | | | | |15
| | | | | | | | | | | | | | | | | | | | | | | | |
16| | | | | | | | | | | | | | | | | | | | | |0.01| | |16
17| |0.01| | | | | | | | |0.27|0.22|0.05| |0.01|0.33|0.14|0.03|0.02| | |0.02|0.03|0.02|17
18|0.01| |0.01| | | | |0.02|0.03| | |0.01|0.01|0.02| |0.01|0.07|0.09|0.07|0.08|0.09|0.07|0.09|0.10|18
19|0.08|0.05|0.06|0.03|0.03|0.02|0.01| |0.02|0.01| | | | |0.01|0.03|0.03|0.09|0.06|0.06|0.03|0.03|0.01| |19
20| |0.01| | | | | | | | | | | | | | | | | | | | | | |20
| | | | | | | | | | | | | | | | | | | | | | | | |
21| | | | | | | | | | | | | | | | | | | | | | | | |21
22| | | | | | | | | | | | | | | | |0.01|0.01| | |0.01|0.01|0.01|0.02|22
23|0.01|0.02|0.01| |0.01| | | | |0.01| | |0.01|0.07|0.03|0.05|0.04|0.03|0.03|0.02|0.01|0.01|0.01|0.01|23
24|0.02| |0.03|0.01|0.01|0.03|0.04|0.01|0.01| | |0.02| | | | | |0.01| |0.01|0.01|0.02| |0.02|24
25|0.01| | | | | | | | |0.01| | | | | | | | | | |0.01| | | |25
| | | | | | | | | | | | | | | | | | | | | | | | |
26| | | | | | | | | | | | | | | | | | | | | | | | |26
27| | | | | | | | | | | | | | | | | | | | | | | | |27
28| | | | | | | | | | | | | | | | | | | | | | | | |28
29| | | | | | | | | | | | | | | | | | | | | | | | |29
30| | | | | | | | | | | | | | | | | | | | | | | | |30
31| | | | | | | | | | | | | | | | | | | | | | | | |31
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
Sum|0.28|0.18|0.21|0.11|0.14|0.20|0.20|0.13|0.20|0.09|0.39|0.33|0.15|0.19|0.17|0.65|0.36|0.30|0.20|0.21|0.27|0.33|0.27|0.26|Sum
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
During a frozen precipitation event, hourly precipitation totals may not be recorded. In this case, daily amounts are
typically entered in the last column (hour ending at 12 A.M.)
|
 |
Current Radar Loop:
Sun Position
|
|
