LOCAL CLIMATOLOGICAL DATA
Hourly Summary
May 10, 2026

Station: Westford
Latitude: 44° 37' 38" N
Longitude: 73° 02' 30" W
Elevation (ground): 850 ft.
Time Zone: Eastern

+--+------------------------+----+-----+--------------------+------------------------+------+
|  |       Temperature      |    | Pre-|      Pressure      |           Wind         |Solar |
|  +------+------+------+---+ Hu-|cipi-|  Adj. to Sea Level +----+---+-------+-------+------+
|  |   M  |   M  |      |   |mid-| ta- +------+------+------+ Avg|Res| Peak  |2Minute| Mean |
|  |   a  |   i  |      | D | ity| tion|      |      |      |    |   +---+---+---+---+   W  |
|  |   x  |   n  |      | e |    |     |      |      |      |  S |   | S |   | S |   |   a  |
| H|   i  |   i  |   M  | w |  M |     |      |      |   M  |  p |   | p |   | p |   |   t  |
| o|   m  |   m  |   e  |   |  e |Water|   M  |   M  |   e  |  e | D | e | D | e | D |   t  |
| u|   u  |   u  |   a  | P |  a |     |   a  |   i  |   a  |  e | i | e | i | e | i |   s  |
| r|   m  |   m  |   n  | t |  n |Equiv|   x  |   n  |   n  |  d | r | d | r | d | r |  m²  |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
| 1|   2  |   3  |   4  | 5 |  6 |  7  |   8  |   9  |  10  | 11 | 12| 13| 14| 15| 16|  17  |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
|00| 49.9 | 48.3 | 49.0 | 44|  84| 0.00| 29.73| 29.70|29.715| 2.3|173| 12|SSE|  6|165|    0 |
|01| 51.9 | 49.8 | 51.0 | 46|  83| 0.00| 29.73| 29.72|29.724| 5.3|173| 22|SSE| 10|167|    0 |
|02| 52.0 | 51.2 | 51.8 | 47|  83| 0.00| 29.73| 29.71|29.721| 5.3|173| 18|  S| 10|173|    0 |
|03| 51.3 | 50.0 | 50.7 | 47|  87| 0.01| 29.73| 29.71|29.722| 4.7|166| 18|SSE|  9|169|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 50.1 | 47.9 | 49.2 | 46|  89| 0.00| 29.73| 29.71|29.716| 2.5|166| 10|SSE|  5|172|    0 |
|05| 47.9 | 47.0 | 47.4 | 45|  91| 0.00| 29.73| 29.71|29.720| 3.2|175| 14|SSE|  6|178|    4 |
|06| 50.1 | 47.6 | 48.8 | 47|  92| 0.00| 29.75| 29.72|29.741| 4.0|177| 15|  S|  8|171|   57 |
|07| 51.5 | 50.1 | 50.9 | 48|  90| 0.00| 29.77| 29.75|29.760| 4.4|183| 15|SSE|  8|202|   75 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 51.5 | 51.0 | 51.2 | 48|  89| 0.01| 29.79| 29.76|29.770| 3.7|183| 14|  S|  8|183|   36 |
|09| 51.1 | 50.4 | 50.8 | 48|  90| 0.18| 29.80| 29.78|29.788| 3.1|208| 11|WSW|  7|247|   51 |
|10| 50.7 | 47.4 | 49.4 | 47|  91| 0.09| 29.82| 29.79|29.804| 5.2|239| 17| SW| 13|264|   94 |
|11| 52.4 | 46.7 | 49.3 | 46|  88| 0.01| 29.83| 29.81|29.818| 5.7|226| 16|WSW|  9|264|  438 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 57.5 | 51.4 | 54.1 | 46|  74| 0.00| 29.83| 29.82|29.824| 4.9|220| 17|  W|  8|227|  660 |
|13| 61.1 | 57.4 | 59.2 | 44|  58| 0.00| 29.82| 29.82|29.820| 7.7|231| 21|  W| 13|264|  879 |
|14| 63.1 | 60.7 | 61.9 | 42|  49| 0.00| 29.82| 29.81|29.818| 7.9|238| 20|  W| 13|260|  836 |
|15| 63.8*| 60.1 | 61.8 | 37|  40| 0.00| 29.83| 29.82|29.820| 8.2|241| 23|WSW| 13|252|  506 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 63.6 | 62.3 | 62.9 | 35|  35| 0.00| 29.83| 29.82|29.823| 8.5|254| 23|WNW| 13|268|  606 |
|17| 62.8 | 60.6 | 61.7 | 33|  34| 0.00| 29.86| 29.83|29.845| 8.9|243| 25|  W| 13|257|  431 |
|18| 60.8 | 56.0 | 58.7 | 31|  34| 0.00| 29.89| 29.86|29.872| 8.0|250| 21|  W| 13|258|  200 |
|19| 56.0 | 52.2 | 53.8 | 31|  41| 0.00| 29.93| 29.89|29.915| 5.6|245| 17| SW|  9|252|   21 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 52.2 | 48.1 | 49.8 | 36|  60| 0.00| 29.97| 29.93|29.958| 2.9|274| 12|WNW|  6|264|    0 |
|21| 48.1 | 46.6 | 47.3 | 38|  69| 0.00| 30.00| 29.97|29.990| 1.8|262| 15|  W|  7|251|    0 |
|22| 46.7 | 44.7 | 45.7 | 37|  71| 0.00| 30.01| 30.00|30.004| 2.1|247| 10|WSW|  6|247|    0 |
|23| 45.9 | 44.0*| 45.2 | 36|  70| 0.00| 30.01| 30.00|30.004| 1.6|250| 11|WSW|  7|252|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.30| 30.01| 29.70|29.820| 4.9|222| 25|  W| 13|258| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     53.9    | 52.6 | 42|70.6| 1.38|  22  |   0  | ---- | -- | - |   17  |   18  | 203.9|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  11|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                0.0 | of Snow, Ice Pellets or Ice     0 |  .........  | Days |  Cool   0|
   +--------------------+-----------------------------------+-------------+------+----------+

  NOTES:
   Data in columns 4, 5, 6, 10, 11, 17 are means via continuous observations for each hour.
   Units: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches.
   Column 5: Dew point is calculated from temperature and humidity and is continuously averaged for each hour.
   Column 12: Resultant wind is calculated by the vector sum of continuous wind observations.
   Precipitation types:
     1 FOG, 2 HEAVY FOG, 3 THUNDER, 4 ICE PELLETS, 5 HAIL, 6 GLAZE, 7 DUSTSTORM,
     8 SMOKE/HAZE, 9 BLOWING SNOW.
   Degree Days heating base is 65°F, cooling base is 65°F.