LOCAL CLIMATOLOGICAL DATA
Hourly Summary
July 17, 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| 56.9 | 56.3 | 56.6 | 50|  79| 0.00| 29.87| 29.87|29.871| 0.4|265|  7|  W|  2|265|    0 |
|01| 56.5 | 54.6 | 55.5 | 50|  82| 0.00| 29.89| 29.87|29.878| 0.1|269|  7|  W|  2|271|    0 |
|02| 54.7 | 54.1 | 54.3 | 50|  84| 0.00| 29.90| 29.89|29.893| 0.3|271|  9|WSW|  3|270|    0 |
|03| 55.1 | 54.4 | 54.8 | 49|  82| 0.00| 29.91| 29.90|29.905| 0.2|258|  8|WNW|  2|270|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 54.7 | 53.2 | 54.1 | 49|  83| 0.00| 29.93| 29.91|29.922| 0.1|255|  3|  W|  1|260|    0 |
|05| 53.3 | 52.3 | 52.8 | 49|  87| 0.00| 29.95| 29.93|29.944| 0.0|252|  2|WSW|  0|252|    5 |
|06| 53.8 | 52.2*| 52.7 | 49|  89| 0.00| 29.97| 29.95|29.962| 0.7|255|  8|WSW|  3|235|   30 |
|07| 61.0 | 53.8 | 57.1 | 52|  84| 0.00| 29.98| 29.97|29.973| 1.4|256| 11|WSW|  5|252|  163 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 65.3 | 61.0 | 63.4 | 55|  74| 0.00| 29.99| 29.98|29.983| 1.2|246|  8|  W|  5|267|  401 |
|09| 67.1 | 65.3 | 66.5 | 56|  69| 0.00| 29.99| 29.98|29.984| 1.5|256| 10|  W|  4|264|  583 |
|10| 69.2 | 67.1 | 68.3 | 57|  66| 0.00| 30.00| 29.98|29.987| 2.4|241| 13|WSW|  6|244|  710 |
|11| 69.9 | 68.9 | 69.3 | 58|  66| 0.00| 30.00| 30.00|30.001| 2.1|257| 10|  W|  5|259|  582 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 72.3 | 68.8 | 69.9 | 57|  64| 0.00| 30.00| 30.00|30.000| 1.7|257| 10|WNW|  5|248|  682 |
|13| 75.6 | 72.1 | 74.3 | 57|  55| 0.00| 30.00| 29.99|29.992| 1.5|260| 11|WNW|  5|257|  896 |
|14| 77.2 | 74.7 | 75.8 | 56|  50| 0.00| 29.99| 29.98|29.986| 2.0|257| 11|WSW|  6|259|  856 |
|15| 78.3 | 76.1 | 77.2 | 56|  49| 0.00| 29.98| 29.97|29.978| 2.3|254| 14|WSW|  6|247|  765 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 78.4*| 77.1 | 77.9 | 57|  48| 0.00| 29.97| 29.97|29.970| 1.1|262| 12|  W|  5|279|  629 |
|17| 78.4 | 74.6 | 76.1 | 57|  52| 0.00| 29.97| 29.95|29.962| 0.5|262| 11|  W|  4|252|  403 |
|18| 74.6 | 71.1 | 72.9 | 57|  58| 0.00| 29.96| 29.95|29.954| 0.1|316|  3| NW|  1|314|  182 |
|19| 71.1 | 63.9 | 67.4 | 58|  72| 0.00| 29.96| 29.95|29.954| 0.0|299|  0| NW|  0|314|   48 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 63.9 | 58.5 | 61.1 | 55|  79| 0.00| 29.96| 29.95|29.958| 0.0|299|  0| NW|  0|314|    6 |
|21| 58.5 | 55.3 | 56.7 | 52|  83| 0.00| 29.97| 29.96|29.961| 0.0|299|  0| NW|  0|314|    0 |
|22| 55.3 | 54.3 | 54.6 | 51|  86| 0.00| 29.96| 29.96|29.962| 0.0|299|  0| NW|  0|314|    0 |
|23| 54.7 | 54.0 | 54.3 | 51|  88| 0.00| 29.96| 29.95|29.955| 0.0|299|  0| NW|  0|314|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 30.00| 29.87|29.956| 0.8|255| 14|WSW|  6|247| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     65.3    | 63.5 | 54|72.1| 1.04|  11+ |   0  | ---- | -- | - |   15  |   15  | 289.3|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat   0|
   | 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.