LOCAL CLIMATOLOGICAL DATA
Hourly Summary
July 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| 55.4 | 54.7*| 55.2 | 52|  89| 0.00| 29.96| 29.95|29.951| 0.0|299|  0| NW|  0|314|    0 |
|01| 55.6 | 54.8 | 55.3 | 52|  89| 0.00| 29.95| 29.93|29.947| 0.0|299|  0| NW|  0|314|    0 |
|02| 55.9 | 55.4 | 55.5 | 52|  89| 0.00| 29.93| 29.92|29.927| 0.0|299|  0| NW|  0|314|    0 |
|03| 56.8 | 55.8 | 56.2 | 53|  89| 0.00| 29.92| 29.91|29.915| 0.0|299|  0| NW|  0|314|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 57.2 | 56.8 | 57.0 | 53|  88| 0.00| 29.91| 29.91|29.911| 0.0|299|  0| NW|  0|314|    0 |
|05| 58.4 | 56.8 | 57.3 | 53|  85| 0.00| 29.91| 29.89|29.895| 0.1|193|  5|  S|  1|184|    0 |
|06| 59.1 | 58.4 | 58.6 | 53|  82| 0.00| 29.89| 29.87|29.885| 0.1|180|  4|  S|  1|183|   10 |
|07| 61.0 | 59.0 | 60.0 | 55|  83| 0.00| 29.87| 29.85|29.859| 0.0|180|  1|  S|  0|180|   54 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 61.4 | 61.0 | 61.2 | 56|  83| 0.00| 29.85| 29.83|29.843| 0.1|180|  4|  S|  1|180|   55 |
|09| 61.8 | 60.9 | 61.3 | 56|  84| 0.01| 29.83| 29.79|29.810| 0.1|180|  6|  S|  1|185|  102 |
|10| 64.7 | 61.8 | 63.6 | 59|  84| 0.00| 29.79| 29.76|29.770| 0.1|152|  5|ESE|  1|123|  158 |
|11| 65.7 | 64.7 | 65.4 | 60|  82| 0.00| 29.76| 29.73|29.744| 0.0|184|  0|ESE|  0|123|  119 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 65.4 | 64.0 | 64.7 | 60|  84| 0.01| 29.73| 29.69|29.707| 0.2|190|  6|SSE|  2|186|  131 |
|13| 64.0 | 62.4 | 63.3 | 59|  87| 0.11| 29.70| 29.64|29.680| 1.7|176| 15|SSE|  4|161|  112 |
|14| 64.4 | 62.3 | 63.0 | 60|  91| 0.00| 29.64| 29.59|29.612| 2.9|169| 17|SSE|  7|154|  184 |
|15| 65.0 | 64.2 | 64.6 | 62|  92| 0.00| 29.59| 29.57|29.578| 2.6|181| 19|  S|  5|187|  132 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 66.7 | 65.0 | 65.5 | 63|  91| 0.00| 29.57| 29.53|29.550| 2.9|181| 14|ESE|  6|175|  112 |
|17| 67.7 | 66.7 | 67.3 | 64|  90| 0.00| 29.53| 29.51|29.521| 3.6|184| 20|SSE|  7|177|  129 |
|18| 67.7 | 67.4 | 67.5 | 65|  90| 0.00| 29.51| 29.49|29.500| 2.8|188| 17|SSE|  6|175|   55 |
|19| 67.6 | 67.4 | 67.4 | 65|  91| 0.00| 29.51| 29.49|29.498| 2.0|185| 14|  S|  5|192|   13 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 67.7 | 67.5 | 67.6 | 65|  92| 0.00| 29.50| 29.47|29.488| 1.8|186|  9|  S|  4|172|    2 |
|21| 67.9 | 67.7 | 67.8 | 66|  93| 0.00| 29.48| 29.47|29.471| 0.5|204|  8|  S|  2|178|    0 |
|22| 68.0 | 67.7 | 67.8 | 66|  93| 0.04| 29.48| 29.46|29.467| 1.1|200|  9|SSE|  3|226|    0 |
|23| 68.1*| 64.0 | 65.4 | 63|  93| 0.20| 29.50| 29.47|29.484| 4.0|256| 21|  W| 10|254|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.37| 29.96| 29.46|29.709| 1.1|192| 21|  W| 10|254| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     61.4    | 62.4 | 59|88.1| 1.41|   0  |  22  | ---- | -- | - |   23  |   23  |  57.0|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat   3|
   | 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.