LOCAL CLIMATOLOGICAL DATA
Hourly Summary
May 16, 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| 52.8 | 50.9 | 51.8 | 50|  93| 0.00| 29.93| 29.92|29.924| 0.1|222|  3|SSW|  1|209|    0 |
|01| 51.0 | 48.7*| 49.6 | 48|  93| 0.00| 29.94| 29.92|29.932| 0.4|217|  6| SW|  3|216|    0 |
|02| 51.9 | 49.9 | 51.4 | 50|  95| 0.00| 29.93| 29.92|29.928| 1.7|182|  9|  S|  4|173|    0 |
|03| 52.1 | 51.7 | 51.9 | 51|  95| 0.00| 29.93| 29.92|29.923| 2.8|181| 11|SSE|  5|181|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 51.9 | 51.1 | 51.6 | 50|  95| 0.00| 29.93| 29.92|29.925| 3.0|181| 10|  S|  6|174|    0 |
|05| 51.2 | 50.2 | 50.7 | 49|  95| 0.00| 29.95| 29.92|29.940| 3.6|178| 13|SSE|  6|174|    6 |
|06| 50.8 | 50.0 | 50.3 | 49|  95| 0.00| 29.97| 29.95|29.960| 3.7|173| 12|SSE|  6|168|   35 |
|07| 53.9 | 50.8 | 52.1 | 51|  95| 0.01| 29.97| 29.94|29.956| 3.6|174| 16|  S|  7|167|  181 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 59.8 | 53.9 | 57.0 | 53|  85| 0.00| 29.96| 29.95|29.958| 3.2|182| 13|SSE|  8|171|  404 |
|09| 62.3 | 59.8 | 60.9 | 53|  74| 0.00| 29.95| 29.94|29.946| 4.7|174| 14|SSE|  8|175|  576 |
|10| 65.4 | 62.3 | 64.2 | 52|  65| 0.00| 29.94| 29.92|29.929| 3.9|181| 17|  S|  7|181|  712 |
|11| 67.9 | 65.3 | 66.5 | 51|  57| 0.00| 29.92| 29.89|29.906| 4.0|173| 15|  S|  8|166|  745 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 70.3 | 67.8 | 69.0 | 50|  52| 0.00| 29.90| 29.86|29.878| 5.1|179| 17|SSE|  9|176|  880 |
|13| 72.6 | 70.2 | 71.6 | 51|  48| 0.00| 29.86| 29.82|29.846| 5.1|173| 18|SSE| 10|179|  885 |
|14| 74.3 | 71.1 | 72.6 | 51|  47| 0.00| 29.82| 29.79|29.808| 4.6|173| 19|  S|  9|173|  692 |
|15| 75.6*| 72.1 | 74.5 | 52|  46| 0.00| 29.79| 29.77|29.780| 5.2|176| 17|SSE|  9|181|  556 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 73.6 | 71.4 | 72.3 | 52|  49| 0.00| 29.77| 29.76|29.767| 4.4|175| 19|SSE| 10|184|  308 |
|17| 73.9 | 72.3 | 73.4 | 52|  47| 0.00| 29.76| 29.75|29.756| 4.2|182| 15|SSE|  8|179|  246 |
|18| 72.3 | 69.9 | 71.3 | 51|  48| 0.00| 29.76| 29.73|29.750| 3.6|183| 14|WSW|  7|193|   73 |
|19| 70.0 | 64.8 | 68.0 | 51|  56| 0.00| 29.74| 29.72|29.728| 3.0|178| 15|SSE|  6|184|    6 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 67.9 | 64.9 | 66.9 | 52|  58| 0.00| 29.73| 29.71|29.718| 4.8|183| 21|SSE|  9|175|    0 |
|21| 67.9 | 66.7 | 67.2 | 53|  61| 0.00| 29.74| 29.71|29.730| 5.5|183| 21|  S| 11|185|    0 |
|22| 66.9 | 66.4 | 66.7 | 55|  67| 0.00| 29.75| 29.74|29.741| 3.7|214| 14| SW|  7|196|    0 |
|23| 66.5 | 65.0 | 65.7 | 56|  72| 0.00| 29.75| 29.74|29.743| 4.1|216| 14|SSW|  8|229|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.01| 29.97| 29.71|29.853| 3.7|181| 21|SSE| 11|185| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     62.2    | 62.4 | 51|70.3| 3.16|   6  |  20  | ---- | -- | - |   20+ |   21  | 262.7|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat   2|
   | 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.