LOCAL CLIMATOLOGICAL DATA
Hourly Summary
May 23, 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| 42.1 | 41.2 | 41.9 | 37|  83| 0.00| 30.39| 30.38|30.388| 0.0|265|  0|  W|  0|268|    0 |
|01| 41.3 | 40.5 | 40.8 | 36|  84| 0.00| 30.39| 30.39|30.391| 0.0|265|  0|  W|  0|268|    0 |
|02| 40.7 | 40.1 | 40.5 | 36|  85| 0.00| 30.39| 30.39|30.389| 0.0|265|  0|  W|  0|268|    0 |
|03| 40.3 | 39.7 | 39.9 | 36|  86| 0.00| 30.41| 30.39|30.399| 0.0|265|  0|  W|  0|268|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 39.9 | 39.3*| 39.5 | 36|  87| 0.00| 30.42| 30.41|30.410| 0.0|265|  0|  W|  0|268|    0 |
|05| 42.3 | 39.4 | 40.1 | 36|  86| 0.00| 30.44| 30.42|30.428| 0.2| 32|  6|NNE|  2| 44|   13 |
|06| 46.6 | 42.3 | 44.6 | 38|  79| 0.00| 30.45| 30.43|30.443| 0.5| 56|  5| NE|  2| 65|   68 |
|07| 52.5 | 46.5 | 49.3 | 42|  75| 0.00| 30.45| 30.45|30.449| 0.0| 53|  2| NE|  0| 53|  189 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 57.6 | 52.5 | 55.1 | 44|  66| 0.00| 30.46| 30.45|30.457| 0.2| 53|  4| NE|  2| 52|  334 |
|09| 61.8 | 57.6 | 60.2 | 46|  59| 0.00| 30.47| 30.45|30.459| 0.5| 37|  5|NNW|  3| 14|  414 |
|10| 65.1 | 61.8 | 63.3 | 46|  53| 0.00| 30.46| 30.45|30.455| 0.8| 47|  6|  E|  4| 99|  467 |
|11| 66.3 | 65.1 | 65.9 | 41|  40| 0.00| 30.45| 30.44|30.446| 1.8|117|  9|  E|  5|100|  519 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 67.2 | 65.8 | 66.6 | 40|  38| 0.00| 30.44| 30.43|30.435| 2.0| 98| 12| SE|  5|114|  500 |
|13| 67.9 | 66.9 | 67.3 | 42|  39| 0.00| 30.43| 30.41|30.421| 1.3|113|  9|ESE|  3| 94|  433 |
|14| 67.9 | 67.0 | 67.5 | 44|  42| 0.00| 30.42| 30.41|30.411| 1.6|162|  9|SSE|  4|181|  387 |
|15| 68.2*| 65.6 | 67.3 | 45|  44| 0.00| 30.41| 30.39|30.400| 1.3|202|  9| SW|  4|178|  283 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 65.6 | 63.9 | 64.8 | 47|  52| 0.00| 30.40| 30.39|30.396| 1.2|234|  7| SW|  3|239|  196 |
|17| 64.0 | 62.5 | 63.2 | 47|  56| 0.00| 30.40| 30.39|30.392| 0.4|232|  5| SW|  2|239|   99 |
|18| 62.5 | 60.2 | 61.5 | 48|  61| 0.00| 30.39| 30.38|30.388| 0.1|163|  6|  S|  1|146|   61 |
|19| 60.4 | 58.9 | 59.9 | 44|  55| 0.00| 30.40| 30.39|30.394| 0.4|174|  8|  S|  2|185|   16 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 58.9 | 56.9 | 58.0 | 44|  59| 0.00| 30.41| 30.39|30.397| 0.5|165|  9|SSE|  4|155|    0 |
|21| 57.6 | 56.9 | 57.3 | 42|  58| 0.00| 30.41| 30.41|30.407| 0.3|199|  6|  S|  2|155|    0 |
|22| 57.3 | 54.8 | 55.7 | 44|  64| 0.00| 30.41| 30.40|30.409| 0.4|173|  7|  S|  2|206|    0 |
|23| 54.9 | 53.1 | 54.0 | 45|  71| 0.00| 30.42| 30.41|30.411| 1.0|197| 11|  S|  4|211|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 30.47| 30.38|30.416| 0.6|142| 12| SE|  5|114| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     53.8    | 55.2 | 42|63.4| 3.38|   9  |   0+ | ---- | -- | - |   12  |   12  | 165.9|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  11|
   | 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.