LOCAL CLIMATOLOGICAL DATA
Hourly Summary
December 9, 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| -5.0 | -5.9 | -5.3 | -9|  84| 0.00| 30.28| 30.27|30.275| 0.0| 25|  0|NNE|  0| 25|    0 |
|01| -5.5 | -6.0*| -5.9 |-10|  83| 0.00| 30.27| 30.26|30.267| 0.0| 25|  0|NNE|  0| 25|    0 |
|02| -4.5 | -5.5 | -4.9 | -8|  84| 0.00| 30.26| 30.25|30.260| 0.0| 25|  0|NNE|  0| 25|    0 |
|03| -2.6 | -5.1 | -3.9 | -7|  84| 0.00| 30.26| 30.24|30.248| 0.0| 25|  0|NNE|  0| 25|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| -2.2 | -3.1 | -2.7 | -6|  84| 0.00| 30.24| 30.24|30.239| 0.0| 73|  1|NNE|  0|107|    0 |
|05| -3.0 | -5.3 | -3.8 | -8|  83| 0.00| 30.24| 30.23|30.233| 0.0|107|  2|  E|  0|107|    0 |
|06| -5.2 | -5.7 | -5.5 | -9|  83| 0.00| 30.23| 30.22|30.223| 0.0|107|  1|  E|  0|107|    0 |
|07| -5.0 | -5.6 | -5.4 | -9|  83| 0.00| 30.22| 30.21|30.216| 0.1|130|  5|SSE|  1|107|    2 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08|  3.7 | -5.0 | -0.0 | -3|  85| 0.00| 30.21| 30.20|30.206| 2.2|175| 12|SSE|  5|174|   11 |
|09|  8.5 |  3.7 |  6.4 |  2|  82| 0.00| 30.20| 30.17|30.187| 3.2|166| 11|SSE|  6|166|  185 |
|10| 11.3 |  8.4 | 10.0 |  3|  73| 0.00| 30.17| 30.15|30.163| 5.9|169| 16| SE|  9|162|  185 |
|11| 13.5 | 11.2 | 12.3 |  4|  69| 0.00| 30.15| 30.10|30.121| 5.5|172| 15|SSE|  9|178|  108 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 16.8 | 13.4 | 15.0 |  6|  66| 0.00| 30.10| 30.07|30.084| 5.5|174| 17|SSE| 10|174|  191 |
|13| 17.0 | 16.3 | 16.6 |  7|  64| 0.00| 30.07| 30.04|30.055| 4.3|174| 13|SSE|  8|181|  123 |
|14| 17.0 | 16.3 | 16.6 |  7|  65| 0.00| 30.04| 30.00|30.021| 2.6|158| 11| SE|  5|155|   85 |
|15| 17.0 | 16.1 | 16.6 |  7|  66| 0.00| 30.00| 29.96|29.980| 1.1|137|  9|  N|  4| 98|   30 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 16.1 | 14.8 | 15.2 |  6|  67| 0.00| 29.96| 29.92|29.938| 0.7|154|  7| SE|  2|159|    1 |
|17| 14.9 | 13.9 | 14.4 |  5|  66| 0.00| 29.92| 29.88|29.903| 1.3|175|  9|SSE|  3|172|    0 |
|18| 17.4 | 14.1 | 15.4 |  5|  62| 0.00| 29.88| 29.86|29.873| 2.8|178| 15|SSE|  8|174|    0 |
|19| 18.7 | 17.4 | 18.1 |  7|  61| 0.00| 29.87| 29.84|29.857| 6.5|171| 22|SSE| 10|175|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 19.8 | 18.6 | 19.3 |  7|  60| 0.00| 29.84| 29.81|29.826| 7.2|171| 21|SSE| 11|166|    0 |
|21| 19.8 | 19.5 | 19.6 | 10|  66| 0.00| 29.81| 29.78|29.797| 7.8|171| 29|  S| 11|165|    0 |
|22| 19.8 | 19.5 | 19.6 | 13|  76| 0.00| 29.78| 29.76|29.770| 9.8|167| 31|SSE| 14|171|    0 |
|23| 20.1*| 19.8 | 19.9 | 14|  79| 0.00| 29.76| 29.73|29.745| 9.2|167| 26|SSE| 13|166|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |  T  | 30.28| 29.73|30.062| 3.2|169| 31|SSE| 14|171| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |      7.1    |  8.2 |  1|74.0| 0.73|   0  |  23  | ---- | -- | - |   22  |   22  |  38.4|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  58|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                 T  | of Snow, Ice Pellets or Ice     6 |  .........  | 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.