LOCAL CLIMATOLOGICAL DATA
Hourly Summary
April 19, 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| 56.8 | 54.4 | 55.6 | 50|  80| 0.04| 29.69| 29.68|29.683| 3.5|165| 15|  S|  7|154|    0 |
|01| 56.9*| 54.5 | 56.1 | 50|  80| 0.01| 29.68| 29.67|29.677| 7.3|178| 22|SSE| 13|179|    0 |
|02| 56.2 | 54.0 | 54.5 | 50|  85| 0.02| 29.68| 29.66|29.665| 7.4|180| 25|  S| 12|173|    0 |
|03| 54.4 | 54.0 | 54.2 | 50|  85| 0.00| 29.67| 29.65|29.657| 8.2|176| 25|  S| 13|175|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 54.1 | 53.3 | 53.8 | 50|  86| 0.00| 29.65| 29.64|29.647| 6.4|179| 21|SSE| 10|175|    0 |
|05| 53.3 | 49.9 | 52.4 | 49|  89| 0.09| 29.70| 29.65|29.666| 5.0|217| 16|WSW| 10|229|    0 |
|06| 49.9 | 45.2 | 46.8 | 44|  90| 0.03| 29.72| 29.68|29.702| 5.6|273| 16|WSW| 10|278|    5 |
|07| 45.2 | 43.7 | 44.4 | 41|  87| 0.00| 29.75| 29.72|29.730| 2.9|264| 15|  W|  9|265|   17 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 43.7 | 41.0 | 42.3 | 39|  87| 0.07| 29.79| 29.75|29.768| 5.2|265| 15|  W|  9|262|   38 |
|09| 41.0 | 37.0 | 39.2 | 36|  90| 0.13| 29.81| 29.79|29.799| 4.1|284| 16|  W|  7|278|   36 |
|10| 37.0 | 31.6 | 33.3 | 31|  90| 0.03| 29.85| 29.81|29.831| 4.2|288| 19|  W| 10|282|   43 |
|11| 32.3 | 31.6 | 31.9 | 30|  92| 0.02| 29.85| 29.83|29.841| 0.6|280| 10|WNW|  4|279|   29 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 32.4 | 32.1 | 32.2 | 30|  92| 0.02| 29.85| 29.84|29.845| 0.3|246|  7|WSW|  3|247|   26 |
|13| 32.4 | 32.0 | 32.2 | 30|  92| 0.02| 29.85| 29.82|29.836| 0.7|262|  9|  W|  3|284|   84 |
|14| 33.4 | 32.0 | 32.4 | 30|  92| 0.04| 29.84| 29.81|29.825| 0.1|248|  5|WSW|  3|248|  169 |
|15| 35.2 | 33.3 | 34.5 | 31|  88| 0.07| 29.81| 29.79|29.799| 0.4|246|  7|WSW|  4|245|  268 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 35.7 | 33.4 | 34.0 | 31|  89| 0.04| 29.81| 29.80|29.805| 1.0|211|  7|  S|  3|195|  155 |
|17| 36.4 | 34.6 | 35.4 | 32|  88| 0.03| 29.82| 29.80|29.815| 0.6|188|  5|  S|  4|182|  141 |
|18| 34.6 | 33.7 | 34.2 | 32|  90| 0.00| 29.85| 29.82|29.825| 1.1|180|  8|  S|  4|179|   39 |
|19| 33.8 | 32.5 | 33.0 | 31|  91| 0.00| 29.86| 29.85|29.852| 0.5|188|  6|  S|  2|190|    1 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 32.7 | 32.4 | 32.5 | 30|  92| 0.00| 29.89| 29.86|29.877| 1.8|199| 11|SSE|  5|182|    0 |
|21| 32.6 | 31.9 | 32.2 | 30|  92| 0.00| 29.89| 29.88|29.886| 1.2|190|  8|  S|  4|186|    0 |
|22| 31.9 | 30.7 | 31.4 | 29|  92| 0.00| 29.90| 29.89|29.893| 2.8|177| 12| SE|  6|182|    0 |
|23| 30.8 | 30.1*| 30.4 | 28|  92| 0.00| 29.91| 29.89|29.900| 1.6|181|  8|SSE|  4|173|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.66| 29.91| 29.64|29.784| 3.0|210| 25|  S| 13|175| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     43.5    | 39.9 | 37|88.8| 4.44|  23  |   4  | ---- | -- | - |    2+ |    3  |  43.8|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  21|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                0.7 | of Snow, Ice Pellets or Ice     T |  .........  | 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.