LOCAL CLIMATOLOGICAL DATA
Hourly Summary
July 20, 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| 58.1 | 55.3 | 56.4 | 52|  85| 0.00| 29.86| 29.84|29.851| 0.0|235|  1| SW|  0|235|    0 |
|01| 55.4 | 54.3 | 54.7 | 51|  87| 0.00| 29.86| 29.85|29.855| 0.0|235|  2| SW|  1|235|    0 |
|02| 54.5 | 53.7 | 54.2 | 51|  88| 0.00| 29.86| 29.85|29.858| 0.1|214|  8| SW|  3|211|    0 |
|03| 53.8 | 52.7*| 53.1 | 50|  89| 0.00| 29.87| 29.86|29.860| 0.0|213|  1|SSW|  0|213|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 53.2 | 52.8 | 53.1 | 51|  91| 0.00| 29.87| 29.86|29.865| 0.0|213|  2|SSW|  0|213|    0 |
|05| 53.2 | 52.9 | 53.1 | 51|  92| 0.00| 29.87| 29.86|29.868| 0.0|213|  2|SSW|  0|213|    4 |
|06| 55.2 | 53.0 | 53.8 | 52|  94| 0.00| 29.88| 29.87|29.878| 0.1|214|  4|SSW|  0|214|   35 |
|07| 60.6 | 55.2 | 57.4 | 55|  92| 0.00| 29.89| 29.88|29.886| 0.4|210|  5|SSW|  1|211|  143 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 66.7 | 60.6 | 63.9 | 58|  81| 0.00| 29.90| 29.89|29.900| 1.3|181|  9|SSE|  3|186|  371 |
|09| 70.9 | 66.7 | 68.8 | 60|  73| 0.00| 29.91| 29.90|29.905| 1.9|215|  9|SSE|  5|235|  531 |
|10| 73.6 | 70.7 | 72.2 | 61|  68| 0.00| 29.91| 29.90|29.909| 1.9|225| 11|WSW|  4|224|  674 |
|11| 75.9 | 73.3 | 74.6 | 62|  65| 0.00| 29.91| 29.90|29.903| 2.4|225| 11| SW|  6|244|  782 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 77.3 | 75.2 | 76.3 | 61|  60| 0.00| 29.90| 29.89|29.896| 2.5|228| 11|WSW|  6|254|  846 |
|13| 78.1 | 76.3 | 77.3 | 61|  58| 0.00| 29.90| 29.89|29.892| 1.8|243| 11|  W|  5|260|  707 |
|14| 79.6 | 76.3 | 78.2 | 61|  55| 0.00| 29.89| 29.88|29.882| 2.1|223| 11| SW|  6|203|  835 |
|15| 81.1*| 79.5 | 80.3 | 62|  53| 0.00| 29.88| 29.86|29.870| 2.0|227|  9|  S|  5|260|  740 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 81.1 | 80.0 | 80.6 | 63|  56| 0.00| 29.86| 29.85|29.857| 1.5|211|  9| SE|  5|225|  566 |
|17| 80.7 | 78.2 | 79.9 | 64|  58| 0.00| 29.85| 29.84|29.847| 1.7|224| 14|WSW|  6|247|  454 |
|18| 78.5 | 75.4 | 77.3 | 62|  59| 0.00| 29.84| 29.83|29.836| 0.8|174|  9| SE|  3|158|  156 |
|19| 75.4 | 68.7 | 71.6 | 62|  71| 0.00| 29.84| 29.83|29.836| 0.0|180|  5|  S|  1|180|   25 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 68.7 | 65.8 | 67.1 | 60|  78| 0.00| 29.84| 29.83|29.837| 0.0|180|  3|  S|  0|180|    2 |
|21| 65.9 | 64.4 | 65.1 | 59|  81| 0.00| 29.85| 29.84|29.845| 0.0|180|  0|  S|  0|180|    0 |
|22| 64.5 | 63.6 | 64.0 | 57|  78| 0.00| 29.84| 29.83|29.839| 0.2|173|  6|SSE|  1|174|    0 |
|23| 63.6 | 63.1 | 63.4 | 56|  77| 0.00| 29.84| 29.83|29.834| 0.2|178|  6|  S|  1|172|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 29.91| 29.83|29.867| 0.9|219| 14|WSW|  6|254| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     66.9    | 66.5 | 58|74.5| 1.42|  10  |  18+ | ---- | -- | - |   17  |   12  | 286.4|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat   0|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                0.0 | of Snow, Ice Pellets or Ice     0 |  .........  | Days |  Cool   2|
   +--------------------+-----------------------------------+-------------+------+----------+

  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.