LOCAL CLIMATOLOGICAL DATA
Hourly Summary
December 10, 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| 21.4 | 20.1*| 20.9 | 15|  77| 0.00| 29.74| 29.71|29.719| 8.3|169| 22|SSE| 13|162|    0 |
|01| 22.4 | 21.3 | 21.9 | 14|  72| 0.00| 29.71| 29.70|29.704| 7.9|170| 22|SSE| 12|168|    0 |
|02| 23.3 | 22.4 | 22.8 | 15|  70| 0.00| 29.71| 29.68|29.695| 8.2|170| 21|SSE| 11|167|    0 |
|03| 23.8 | 23.2 | 23.6 | 15|  70| 0.00| 29.68| 29.65|29.671| 8.0|172| 23|SSE| 11|177|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 24.1 | 23.4 | 23.8 | 17|  74| 0.00| 29.66| 29.65|29.654| 7.6|169| 23|  S| 12|167|    0 |
|05| 24.9 | 24.1 | 24.4 | 19|  78| 0.00| 29.65| 29.64|29.643| 7.3|169| 20|SSE| 10|167|    0 |
|06| 25.6 | 24.9 | 25.2 | 20|  79| 0.00| 29.64| 29.62|29.633| 6.8|166| 21|SSE|  9|161|    0 |
|07| 26.3 | 25.5 | 25.9 | 20|  79| 0.00| 29.62| 29.59|29.607| 5.5|169| 17|  S|  8|172|    7 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 26.7 | 26.3 | 26.5 | 22|  82| 0.00| 29.59| 29.57|29.579| 4.9|164| 18|  S|  8|167|   44 |
|09| 26.9 | 26.6 | 26.7 | 23|  87| 0.00| 29.57| 29.53|29.549| 3.8|156| 14|SSE|  7|164|   44 |
|10| 27.7 | 26.9 | 27.3 | 24|  88| 0.00| 29.53| 29.47|29.503| 2.1|155| 10|SSE|  4|161|   24 |
|11| 28.3 | 26.9 | 27.8 | 25|  89| 0.00| 29.47| 29.41|29.448| 0.3|121|  4|  E|  2| 92|   12 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 27.3 | 26.7 | 27.0 | 24|  89| 0.00| 29.41| 29.37|29.387| 0.0|127|  3|ESE|  0|127|    9 |
|13| 27.4 | 27.0 | 27.2 | 24|  89| 0.00| 29.37| 29.33|29.346| 1.3|162|  8|SSE|  3|162|    5 |
|14| 27.6 | 27.1 | 27.4 | 25|  90| 0.00| 29.33| 29.31|29.314| 3.5|172| 15|  S|  8|171|    2 |
|15| 27.5 | 27.4 | 27.5 | 25|  90| 0.00| 29.32| 29.29|29.304| 4.8|167| 16|  S|  9|165|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 28.2 | 27.4 | 27.7 | 25|  90| 0.00| 29.30| 29.26|29.276| 4.7|169| 14|SSE|  8|164|    0 |
|17| 29.8 | 28.2 | 29.0 | 27|  90| 0.00| 29.26| 29.25|29.256| 6.2|171| 20|SSE| 12|167|    0 |
|18| 30.5 | 29.8 | 30.1 | 28|  90| 0.00| 29.25| 29.24|29.241| 5.7|170| 19|  S| 12|167|    0 |
|19| 30.8 | 30.4 | 30.6 | 28|  91| 0.00| 29.24| 29.22|29.229| 5.4|170| 18|SSE|  9|170|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 31.2 | 30.7 | 30.9 | 28|  91| 0.00| 29.22| 29.20|29.208| 5.9|167| 15|  S|  8|169|    0 |
|21| 31.6 | 31.1 | 31.4 | 29|  90| 0.00| 29.20| 29.18|29.187| 6.6|167| 17|SSE|  9|166|    0 |
|22| 31.9 | 31.5 | 31.7 | 29|  90| 0.00| 29.18| 29.16|29.171| 5.4|169| 16|  S|  8|171|    0 |
|23| 32.3*| 31.8 | 32.1 | 29|  90| 0.00| 29.16| 29.15|29.156| 5.6|166| 16|SSE|  8|160|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 29.74| 29.15|29.437| 5.2|168| 23|SSE| 13|162| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     26.2    | 27.1 | 23|84.4| 0.73|   0  |  23  | ---- | -- | - |    3+ |    0  |   6.1|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  39|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                2.0 | of Snow, Ice Pellets or Ice     8 |  .........  | 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.