LOCAL CLIMATOLOGICAL DATA
Hourly Summary
March 18, 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| 13.0 | 12.6 | 12.9 |  7|  76| 0.00| 30.10| 30.06|30.084| 0.5|293|  7|WNW|  3|289|    0 |
|01| 13.1 | 12.9 | 13.0 |  7|  77| 0.00| 30.13| 30.10|30.118| 0.7|307|  9|NNW|  3|347|    0 |
|02| 13.0 | 12.5 | 12.8 |  7|  76| 0.00| 30.17| 30.13|30.152| 1.5|286| 11| SW|  5|276|    0 |
|03| 12.5 | 11.7 | 12.0 |  6|  77| 0.00| 30.19| 30.17|30.180| 2.9|280| 12|  W|  8|280|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 11.8 | 10.4 | 11.2 |  5|  76| 0.00| 30.23| 30.19|30.211| 1.8|286| 10|  W|  5|287|    0 |
|05| 10.6 |  9.4 | 10.3 |  5|  78| 0.00| 30.26| 30.23|30.244| 1.0|280|  8|WNW|  4|293|    0 |
|06|  9.4 |  7.7 |  8.4 |  4|  82| 0.00| 30.29| 30.26|30.272| 0.0|269|  0|WNW|  0|293|    0 |
|07|  7.9 |  7.5*|  7.7 |  4|  84| 0.00| 30.31| 30.28|30.297| 0.0|293|  4|WNW|  1|293|   12 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 11.3 |  7.9 |  9.5 |  5|  80| 0.00| 30.34| 30.31|30.322| 0.3|350|  8|  N|  3|  7|   44 |
|09| 15.5 | 11.3 | 14.2 |  6|  71| 0.00| 30.38| 30.33|30.358| 1.9|271| 10|WSW|  6|248|  330 |
|10| 17.4 | 15.0 | 16.2 |  6|  63| 0.00| 30.41| 30.38|30.396| 2.6|253| 11|  W|  6|252|  471 |
|11| 20.4 | 17.4 | 19.1 |  6|  57| 0.00| 30.41| 30.40|30.403| 2.6|229| 11|WSW|  6|247|  649 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 21.9 | 20.4 | 21.1 |  7|  55| 0.00| 30.41| 30.39|30.400| 3.7|196| 12|SSE|  8|174|  730 |
|13| 23.5 | 21.5 | 22.7 |  9|  55| 0.00| 30.40| 30.36|30.380| 2.5|198| 10|SSW|  7|267|  640 |
|14| 23.5 | 21.9 | 22.7 |  8|  53| 0.00| 30.36| 30.34|30.351| 1.4|235|  9|WSW|  6|266|  462 |
|15| 25.2 | 23.2 | 24.2 |  9|  51| 0.00| 30.34| 30.33|30.334| 1.1|356|  8|NNW|  3|  3|  406 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 25.1 | 24.1 | 24.7 |  8|  48| 0.00| 30.33| 30.33|30.328| 0.8| 65|  7| NE|  4| 46|  286 |
|17| 25.8*| 24.2 | 24.9 |  8|  48| 0.00| 30.34| 30.33|30.334| 1.0|164|  7|SSE|  5|165|  122 |
|18| 24.2 | 23.1 | 23.8 |  9|  52| 0.00| 30.35| 30.34|30.343| 0.0|165|  2|SSE|  1|165|   18 |
|19| 23.2 | 22.9 | 23.0 |  9|  54| 0.00| 30.34| 30.33|30.339| 0.3|104|  4|SSE|  2| 96|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 23.0 | 22.0 | 22.6 | 10|  58| 0.00| 30.34| 30.33|30.339| 0.0| 92|  1|  E|  0| 92|    0 |
|21| 22.1 | 21.3 | 21.7 | 12|  65| 0.00| 30.34| 30.33|30.335| 0.0| 92|  0|  E|  0| 92|    0 |
|22| 21.3 | 20.7 | 21.1 | 12|  69| 0.00| 30.33| 30.32|30.326| 0.0| 92|  0|  E|  0| 92|    0 |
|23| 21.7 | 20.4 | 21.0 | 12|  69| 0.00| 30.32| 30.31|30.314| 0.0| 92|  0|  E|  0| 92|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 30.41| 30.06|30.298| 1.1|249| 12|  W|  8|174| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     16.6    | 17.5 |  8|65.5| 0.39|  10+ |   0  | ---- | -- | - |    3+ |   12  | 173.7|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  48|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                0.0 | of Snow, Ice Pellets or Ice     0 |  .........  | 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.