LOCAL CLIMATOLOGICAL DATA
Hourly Summary
December 25, 2025

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| 21.1 | 20.6 | 20.7 | 18|  89| 0.00| 30.14| 30.08|30.116| 2.9|180| 11|  S|  5|183|    0 |
|01| 21.9 | 21.0 | 21.4 | 19|  89| 0.00| 30.09| 30.07|30.082| 3.9|171| 14|SSE|  8|162|    0 |
|02| 22.7 | 21.8 | 22.4 | 19|  88| 0.00| 30.08| 30.05|30.062| 5.5|175| 15|SSE|  8|177|    0 |
|03| 22.8 | 22.5 | 22.7 | 20|  90| 0.00| 30.06| 30.00|30.028| 5.2|181| 17|  S| 10|171|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 22.9 | 22.7 | 22.9 | 21|  91| 0.00| 30.01| 29.91|29.962| 5.8|176| 17|SSE|  9|176|    0 |
|05| 23.3 | 22.8 | 23.0 | 21|  91| 0.00| 29.91| 29.89|29.903| 4.6|180| 18|  S|  8|177|    0 |
|06| 24.0 | 23.3 | 23.6 | 21|  90| 0.00| 29.89| 29.87|29.884| 4.0|185| 12|SSE|  6|182|    0 |
|07| 24.2 | 23.9 | 24.1 | 21|  89| 0.00| 29.89| 29.87|29.881| 5.4|178| 16|SSE|  8|173|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 24.2 | 23.8 | 23.9 | 21|  90| 0.00| 29.89| 29.87|29.872| 2.8|180| 11|SSE|  7|170|    0 |
|09| 24.8*| 24.1 | 24.5 | 22|  91| 0.00| 29.90| 29.89|29.893| 2.9|278| 14|WNW|  8|278|    4 |
|10| 24.1 | 22.4 | 23.2 | 21|  90| 0.00| 29.91| 29.90|29.901| 4.4|285| 17|  W|  8|283|    9 |
|11| 22.5 | 21.3 | 21.7 | 19|  87| 0.00| 29.92| 29.91|29.913| 4.1|287| 14|  W|  7|280|    9 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 21.4 | 20.8 | 21.1 | 18|  87| 0.00| 29.93| 29.92|29.919| 4.8|289| 17|  W|  9|285|   14 |
|13| 20.8 | 19.8 | 20.4 | 17|  85| 0.00| 29.98| 29.93|29.950| 4.3|293| 17|  W|  8|285|    9 |
|14| 19.8 | 18.8 | 19.2 | 16|  86| 0.00| 30.04| 29.98|30.002| 4.5|301| 18|  W|  9|277|   11 |
|15| 18.8 | 16.4 | 17.3 | 14|  87| 0.00| 30.08| 30.03|30.050| 2.8|315| 15|NNW|  7|317|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 16.5 | 14.9 | 15.6 | 11|  83| 0.00| 30.12| 30.07|30.096| 2.3|314| 13|  N|  4|341|    0 |
|17| 15.0 | 13.8 | 14.3 |  9|  79| 0.00| 30.15| 30.12|30.134| 2.1|321| 13| NW|  4|315|    0 |
|18| 13.8 | 12.5 | 13.3 |  8|  79| 0.00| 30.19| 30.14|30.165| 2.1|328| 11| NE|  5|315|    0 |
|19| 12.5 | 10.1 | 11.3 |  5|  77| 0.00| 30.22| 30.19|30.206| 2.4|317| 13|  N|  5|340|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 10.1 |  7.8 |  8.6 |  3|  76| 0.00| 30.24| 30.22|30.227| 2.1|325| 12|NNE|  5|285|    0 |
|21|  7.8 |  4.5 |  5.8 |  0|  77| 0.00| 30.25| 30.24|30.247| 1.5|322| 12| NW|  4|343|    0 |
|22|  5.0 |  3.8 |  4.4 | -1|  79| 0.00| 30.27| 30.25|30.263| 1.7|330| 12| NW|  4|331|    0 |
|23|  3.9 |  2.4*|  3.1 | -2|  81| 0.00| 30.27| 30.26|30.265| 1.3|336|  9| NW|  4|326|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 30.27| 29.87|30.043| 3.5|242| 18|  S| 10|171| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     13.6    | 17.9 | 14|85.4| 3.08|  22+ |   8  | ---- | -- | - |    5+ |    3  |   2.4|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  51|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                1.5 | of Snow, Ice Pellets or Ice     7 |  .........  | 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.