LOCAL CLIMATOLOGICAL DATA
Hourly Summary
January 4, 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|  7.6 |  6.7 |  7.2 |  4|  85| 0.00| 29.98| 29.98|29.980| 0.0| 26|  0|NNE|  0| 26|    0 |
|01|  6.7 |  3.5 |  5.2 |  2|  85| 0.00| 29.99| 29.98|29.988| 0.0| 26|  0|NNE|  0| 26|    0 |
|02|  3.5 |  2.2 |  2.7 | -1|  85| 0.00| 30.00| 29.99|29.996| 0.0| 26|  0|NNE|  0| 26|    0 |
|03|  2.4 |  2.0 |  2.2 | -1|  86| 0.00| 30.00| 30.00|29.998| 0.0| 26|  0|NNE|  0| 26|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04|  2.5 |  1.6 |  2.1 | -1|  86| 0.00| 30.01| 30.00|30.008| 0.0| 26|  0|NNE|  0| 26|    0 |
|05|  2.1 |  1.3 |  1.7 | -2|  85| 0.00| 30.02| 30.01|30.014| 0.0| 26|  0|NNE|  0| 26|    0 |
|06|  1.4 | -1.0*|  0.4 | -3|  85| 0.00| 30.03| 30.01|30.021| 0.0| 26|  0|NNE|  0| 26|    0 |
|07|  2.3 | -1.0 |  0.1 | -3|  86| 0.00| 30.05| 30.03|30.042| 0.0| 26|  0|NNE|  0| 26|    2 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08|  6.1 |  2.3 |  4.6 |  2|  87| 0.00| 30.08| 30.05|30.063| 0.0| 26|  0|NNE|  0| 26|   23 |
|09|  8.2 |  6.1 |  7.5 |  4|  84| 0.00| 30.09| 30.08|30.083| 0.4|356|  6|NNW|  2|  1|   60 |
|10|  9.1 |  8.1 |  8.7 |  4|  80| 0.00| 30.09| 30.07|30.085| 0.5|333|  4|NNW|  3|334|   81 |
|11| 11.2 |  9.0 | 10.5 |  4|  76| 0.00| 30.07| 30.05|30.064| 0.4|329|  9| NW|  2|329|  122 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 12.5*| 11.0 | 11.8 |  4|  71| 0.00| 30.05| 30.04|30.049| 0.6|332|  5| NW|  2|346|  202 |
|13| 12.3 | 11.7 | 12.0 |  4|  68| 0.00| 30.06| 30.05|30.051| 0.6| 11|  5|NNW|  3|  0|  133 |
|14| 11.7 | 11.2 | 11.4 |  4|  70| 0.00| 30.07| 30.05|30.059| 0.2| 12|  3|  N|  2| 12|   63 |
|15| 11.3 | 10.2 | 10.7 |  3|  72| 0.00| 30.08| 30.07|30.077| 0.1| 12|  3|  N|  2| 12|   28 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 10.3 |  9.0 |  9.6 |  3|  74| 0.00| 30.09| 30.07|30.080| 0.3|352|  6| NW|  2|327|    3 |
|17|  9.0 |  7.9 |  8.3 |  1|  73| 0.00| 30.11| 30.09|30.102| 0.4|357|  5|  N|  3|355|    0 |
|18|  7.9 |  7.7 |  7.8 |  1|  73| 0.00| 30.13| 30.11|30.121| 0.3|355|  4|  N|  2|355|    0 |
|19|  7.9 |  7.7 |  7.8 |  1|  74| 0.00| 30.14| 30.13|30.132| 0.4|356|  5|  N|  1|355|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20|  7.9 |  7.7 |  7.8 |  2|  76| 0.00| 30.15| 30.14|30.145| 0.1|316|  6|  W|  1|286|    0 |
|21|  8.0 |  6.8 |  7.7 |  2|  77| 0.00| 30.16| 30.15|30.156| 1.1|280| 12|  W|  5|286|    0 |
|22|  6.8 |  4.9 |  5.4 | -0|  77| 0.00| 30.18| 30.16|30.170| 1.8|278| 11|  W|  5|270|    0 |
|23|  5.1 |  2.7 |  3.9 | -1|  79| 0.00| 30.19| 30.18|30.184| 1.4|270|  9|  W|  5|276|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |  T  | 30.19| 29.98|30.069| 0.4|311| 12|  W|  5|286| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |      5.8    |  6.5 |  1|78.8| 0.02|  23  |   0  | ---- | -- | - |   21  |   21  |  29.8|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  59|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                 T  | of Snow, Ice Pellets or Ice     4 |  .........  | 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.