LOCAL CLIMATOLOGICAL DATA
Hourly Summary
April 27, 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| 45.9 | 44.0 | 45.0 | 37|  74| 0.00| 30.16| 30.15|30.156| 0.0|242|  0|WNW|  0|294|    0 |
|01| 46.4 | 43.9 | 45.6 | 38|  74| 0.00| 30.16| 30.15|30.157| 0.0|242|  0|WNW|  0|294|    0 |
|02| 45.4 | 42.8 | 44.0 | 37|  77| 0.00| 30.16| 30.15|30.154| 0.0|242|  0|WNW|  0|294|    0 |
|03| 43.5 | 42.0 | 43.0 | 37|  78| 0.00| 30.17| 30.16|30.163| 0.0|242|  0|WNW|  0|294|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 42.4 | 41.1 | 41.7 | 36|  80| 0.00| 30.19| 30.17|30.183| 0.0|242|  0|WNW|  0|294|    0 |
|05| 41.1 | 39.2 | 40.0 | 35|  83| 0.00| 30.20| 30.19|30.198| 0.0|242|  0|WNW|  0|294|    1 |
|06| 40.8 | 39.0*| 39.7 | 36|  85| 0.00| 30.22| 30.20|30.213| 0.0|242|  0|WNW|  0|294|   17 |
|07| 52.3 | 40.8 | 45.9 | 40|  80| 0.00| 30.22| 30.22|30.218| 0.0|242|  0|WNW|  0|294|  166 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 58.9 | 52.3 | 56.3 | 43|  62| 0.00| 30.23| 30.22|30.223| 0.2|258|  3|WSW|  2|258|  368 |
|09| 64.2 | 58.9 | 61.8 | 44|  52| 0.00| 30.23| 30.23|30.229| 1.0|311|  7|  N|  4|347|  538 |
|10| 67.0 | 63.8 | 65.1 | 45|  47| 0.00| 30.23| 30.23|30.229| 2.0|262|  8|WSW|  5|254|  679 |
|11| 68.4 | 66.2 | 67.2 | 45|  45| 0.00| 30.23| 30.21|30.219| 2.7|265| 11|  W|  6|273|  783 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 70.6 | 68.4 | 69.8 | 45|  41| 0.00| 30.21| 30.18|30.197| 3.4|261| 11|WSW|  8|256|  844 |
|13| 72.6 | 69.5 | 71.1 | 45|  39| 0.00| 30.19| 30.17|30.179| 3.8|269| 15| SW|  8|244|  825 |
|14| 71.7 | 70.2 | 71.1 | 43|  37| 0.00| 30.18| 30.17|30.174| 5.5|261| 16|WSW|  9|258|  794 |
|15| 72.4 | 71.2 | 72.0 | 44|  37| 0.00| 30.17| 30.16|30.161| 3.5|288| 12| SW|  7|274|  694 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 73.2 | 72.0 | 72.6 | 44|  36| 0.00| 30.16| 30.15|30.152| 2.5|273| 12|WNW|  5|266|  554 |
|17| 73.3*| 72.0 | 72.8 | 43|  35| 0.00| 30.15| 30.14|30.142| 1.2|315|  7|  W|  5|263|  382 |
|18| 73.3 | 71.5 | 72.1 | 43|  35| 0.00| 30.14| 30.13|30.131| 0.8|282|  6|  W|  4|276|  193 |
|19| 72.0 | 63.0 | 68.2 | 44|  42| 0.00| 30.13| 30.12|30.126| 0.0|275|  1|  W|  0|276|   25 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 63.0 | 57.8 | 60.0 | 43|  54| 0.00| 30.13| 30.13|30.129| 0.0|275|  0|  W|  0|276|    0 |
|21| 58.4 | 57.5 | 58.0 | 43|  57| 0.00| 30.14| 30.13|30.133| 0.0|275|  0|  W|  0|276|    0 |
|22| 57.7 | 57.1 | 57.4 | 43|  58| 0.00| 30.13| 30.11|30.125| 0.0|275|  0|  W|  0|276|    0 |
|23| 57.4 | 52.5 | 55.1 | 43|  63| 0.00| 30.12| 30.11|30.112| 0.0|275|  0|  W|  0|276|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 30.23| 30.11|30.171| 1.1|272| 16|WSW|  9|258| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     56.2    | 58.2 | 41|57.0| 4.54|  10  |  23  | ---- | -- | - |   14  |   14  | 286.0|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat   9|
   | 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.