LOCAL CLIMATOLOGICAL DATA
Hourly Summary
May 31, 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| 41.2 | 40.1*| 40.6 | 38|  89| 0.00| 30.04| 30.03|30.038| 0.0| 65|  1|ENE|  0| 65|    0 |
|01| 41.2 | 40.2 | 40.6 | 38|  90| 0.00| 30.03| 30.01|30.028| 0.0| 78|  0|ENE|  0| 65|    0 |
|02| 41.4 | 40.4 | 40.9 | 39|  92| 0.00| 30.02| 30.00|30.009| 0.0| 78|  0|ENE|  0| 65|    0 |
|03| 42.3 | 41.3 | 41.8 | 40|  92| 0.00| 30.00| 29.99|29.996| 0.1|104|  3|  E|  0| 99|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 43.4 | 42.2 | 42.8 | 40|  89| 0.00| 29.99| 29.97|29.978| 0.4|182|  6|SSW|  2|187|    0 |
|05| 45.1 | 43.4 | 44.3 | 40|  85| 0.00| 29.97| 29.97|29.967| 0.6|186|  9|SSE|  2|183|    6 |
|06| 47.1 | 45.0 | 46.0 | 41|  83| 0.00| 29.97| 29.95|29.961| 0.9|196|  9|  S|  3|191|   38 |
|07| 48.7 | 47.1 | 48.1 | 42|  79| 0.00| 29.95| 29.94|29.945| 2.3|185| 12|  S|  6|181|   93 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 50.7 | 48.6 | 49.7 | 43|  78| 0.00| 29.95| 29.93|29.940| 1.5|176| 10|SSE|  4|173|  139 |
|09| 51.0 | 50.4 | 50.7 | 46|  83| 0.00| 29.94| 29.91|29.928| 0.9|180| 11|  S|  3|173|  155 |
|10| 56.3 | 51.0 | 53.4 | 48|  81| 0.00| 29.91| 29.89|29.894| 2.3|186| 16|SSE|  6|176|  331 |
|11| 56.2 | 54.1 | 55.6 | 50|  80| 0.02| 29.92| 29.89|29.906| 0.3|149|  8|  S|  3|185|  158 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 56.1 | 53.6 | 54.9 | 51|  85| 0.00| 29.92| 29.88|29.890| 0.4|188|  5|  S|  2|199|  296 |
|13| 57.0 | 56.0 | 56.6 | 52|  84| 0.01| 29.88| 29.85|29.867| 0.1|203|  4|  S|  1|210|  232 |
|14| 57.0 | 55.1 | 56.2 | 52|  85| 0.02| 29.87| 29.82|29.849| 0.8|206| 10|SSE|  4|177|  215 |
|15| 59.7 | 57.0 | 58.9 | 53|  80| 0.00| 29.83| 29.80|29.810| 2.3|213| 12|  S|  5|200|  337 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 62.8 | 58.4 | 60.9 | 52|  73| 0.00| 29.80| 29.79|29.792| 4.1|230| 15|  W|  7|246|  473 |
|17| 63.6*| 58.8 | 61.6 | 51|  68| 0.00| 29.82| 29.79|29.794| 2.9|240| 15|  N|  6|352|  229 |
|18| 58.8 | 49.2 | 52.1 | 45|  78| 0.06| 29.87| 29.82|29.850| 1.6|356| 15|WNW|  6|335|   16 |
|19| 49.2 | 48.4 | 48.6 | 45|  88| 0.01| 29.86| 29.83|29.844| 0.1| 38|  4|  N|  2| 14|   26 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 48.5 | 46.7 | 47.6 | 45|  90| 0.00| 29.88| 29.84|29.853| 0.0|123|  0|  N|  0| 14|    5 |
|21| 46.8 | 45.2 | 45.9 | 43|  91| 0.00| 29.89| 29.88|29.881| 0.0|123|  0|  N|  0| 14|    0 |
|22| 45.2 | 43.6 | 44.2 | 42|  92| 0.00| 29.88| 29.87|29.875| 0.0|123|  1|ESE|  0|123|    0 |
|23| 46.1 | 44.5 | 45.3 | 44|  94| 0.01| 29.89| 29.88|29.880| 0.0|123|  0|ESE|  0|123|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.13| 30.04| 29.79|29.907| 0.9|208| 16|SSE|  7|246| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     51.8    | 49.5 | 45|84.6| 5.99|   0  |  16+ | ---- | -- | - |   10  |   16  | 114.5|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  13|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                0.0 | of Snow, Ice Pellets or Ice     0 |  ..3......  | 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.