LOCAL CLIMATOLOGICAL DATA
Hourly Summary
December 22, 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| 12.5 | 11.6 | 12.0 |  5|  73| 0.00| 30.30| 30.28|30.291| 3.9|267| 14|  W|  8|282|    0 |
|01| 11.9 | 10.8 | 11.3 |  5|  74| 0.00| 30.33| 30.30|30.310| 5.1|262| 18|  W|  9|254|    0 |
|02| 10.9 | 10.4 | 10.7 |  4|  74| 0.00| 30.36| 30.33|30.345| 6.2|264| 17|  W|  9|268|    0 |
|03| 11.5 | 10.7 | 11.1 |  5|  75| 0.00| 30.36| 30.35|30.358| 5.8|258| 13|WSW|  8|256|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 11.6 | 11.0 | 11.3 |  5|  77| 0.00| 30.38| 30.36|30.370| 4.1|261| 11|  W|  8|255|    0 |
|05| 11.1 | 10.1 | 10.7 |  5|  77| 0.00| 30.39| 30.37|30.377| 4.2|254| 10|WSW|  8|272|    0 |
|06| 11.0 | 10.1 | 10.4 |  5|  77| 0.00| 30.42| 30.39|30.411| 3.5|256| 12|  W|  7|267|    0 |
|07| 10.9 |  9.3*| 10.1 |  4|  76| 0.00| 30.43| 30.42|30.429| 3.5|267| 12|WSW|  7|265|    4 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 10.5 |  9.3 |  9.8 |  4|  77| 0.00| 30.44| 30.43|30.435| 2.8|261| 12|  W|  7|280|   29 |
|09| 13.0 | 10.5 | 11.7 |  5|  74| 0.00| 30.44| 30.43|30.438| 1.8|257| 10|WNW|  6|252|  115 |
|10| 14.8 | 13.0 | 14.0 |  6|  70| 0.00| 30.43| 30.42|30.427| 1.8|232| 10|WSW|  5|249|  146 |
|11| 16.7 | 14.7 | 15.4 |  7|  68| 0.00| 30.43| 30.40|30.410| 2.2|246|  9|SSW|  6|256|  159 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 18.5 | 16.6 | 17.3 |  8|  68| 0.00| 30.40| 30.37|30.383| 2.2|181|  8| SE|  5|178|  208 |
|13| 19.2 | 18.3 | 18.8 | 10|  69| 0.00| 30.37| 30.36|30.363| 1.7|200|  8|SSE|  4|182|  148 |
|14| 18.6 | 17.5 | 17.8 | 12|  77| 0.00| 30.36| 30.34|30.352| 2.0|181| 10|  S|  5|167|   69 |
|15| 17.6 | 17.1 | 17.3 | 13|  83| 0.00| 30.34| 30.33|30.333| 1.7|172|  9|SSE|  5|165|   25 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 17.6 | 17.1 | 17.4 | 14|  85| 0.00| 30.33| 30.32|30.327| 3.1|173| 11|SSE|  6|171|    0 |
|17| 18.4 | 17.5 | 17.9 | 15|  87| 0.00| 30.32| 30.30|30.311| 2.6|175| 10|SSE|  5|170|    0 |
|18| 19.6 | 18.4 | 19.0 | 16|  88| 0.00| 30.31| 30.30|30.301| 4.5|179| 13|SSE|  7|173|    0 |
|19| 20.4 | 19.5 | 20.0 | 17|  89| 0.00| 30.31| 30.29|30.297| 4.5|180| 15|  S|  8|178|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 21.3 | 20.4 | 20.9 | 18|  89| 0.00| 30.30| 30.29|30.292| 4.6|171| 13|SSE|  6|172|    0 |
|21| 21.8 | 21.2 | 21.5 | 19|  89| 0.00| 30.30| 30.29|30.292| 2.0|171|  9|SSE|  4|172|    0 |
|22| 22.1 | 21.8 | 21.9 | 19|  89| 0.00| 30.29| 30.28|30.288| 0.0|173|  0|SSE|  0|172|    0 |
|23| 22.2*| 22.0 | 22.0 | 19|  89| 0.00| 30.28| 30.27|30.280| 0.0|173|  0|SSE|  0|172|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 30.44| 30.27|30.351| 3.1|229| 18|  W|  9|254| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     15.8    | 15.4 | 10|79.0| 2.45|   8+ |  23  | ---- | -- | - |    1  |    1  |  37.7|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  49|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                1.2 | of Snow, Ice Pellets or Ice     1 |  .........  | 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.