LOCAL CLIMATOLOGICAL DATA
Hourly Summary
May 27, 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| 66.5 | 65.1 | 66.0 | 51|  59| 0.00| 29.78| 29.77|29.775| 1.6|203| 10|  S|  0|  0|    0 |
|01| 66.7 | 65.1 | 66.1 | 51|  59| 0.00| 29.77| 29.76|29.761| 1.6|248| 12|  S|  0|  0|    0 |
|02| 66.6 | 64.1 | 65.1 | 51|  60| 0.00| 29.76| 29.75|29.753| 1.7|203| 14|  S|  0|  0|    0 |
|03| 67.2 | 65.5 | 66.6 | 51|  58| 0.00| 29.75| 29.75|29.749| 2.4|225| 12| SW|  0|  0|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 65.5 | 64.1 | 64.9 | 52|  62| 0.00| 29.75| 29.74|29.746| 3.0|225| 12| SW|  0|  0|    0 |
|05| 64.1 | 63.2 | 63.6 | 52|  66| 0.00| 29.75| 29.75|29.749| 2.9|225| 13|WSW|  0|  0|   15 |
|06| 63.5 | 63.0 | 63.2 | 54|  71| 0.00| 29.76| 29.75|29.753| 1.9|248| 13|WSW|  0|  0|   69 |
|07| 66.4 | 63.5 | 65.3 | 55|  69| 0.00| 29.77| 29.76|29.764| 2.1|270| 10|WSW|  0|  0|  203 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 67.3 | 66.9 | 67.2 | 57|  71| 0.00| 29.76| 29.76|29.763| 2.0|261|  8|  W|  4|261|  334 |
|09| 66.9 | 65.4 | 66.0 | 57|  74| 0.00| 29.77| 29.76|29.768| 0.5|295|  9|  W|  4|265|  219 |
|10| 67.1 | 65.7 | 66.3 | 58|  75| 0.00| 29.77| 29.77|29.771| 0.5|303|  9|  W|  3|270|  293 |
|11| 69.3 | 67.1 | 68.1 | 59|  72| 0.00| 29.77| 29.77|29.772| 1.0|278|  8|  W|  4|264|  464 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 71.9 | 69.3 | 70.3 | 59|  67| 0.00| 29.77| 29.77|29.769| 1.3|294| 11|  W|  5|265|  761 |
|13| 73.4 | 71.2 | 72.2 | 58|  61| 0.00| 29.77| 29.75|29.761| 2.2|316| 11|  W|  5|341|  854 |
|14| 73.7 | 73.0 | 73.4 | 58|  58| 0.00| 29.76| 29.74|29.750| 1.9|333| 16|  N|  8|356|  840 |
|15| 73.8 | 72.8 | 73.3 | 56|  55| 0.00| 29.75| 29.74|29.739| 2.0|342| 14|  N|  5|351|  766 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 74.6*| 73.5 | 74.1 | 56|  53| 0.00| 29.74| 29.73|29.737| 2.1|310| 13|  N|  6|355|  627 |
|17| 74.2 | 71.9 | 73.3 | 56|  54| 0.00| 29.74| 29.73|29.739| 1.2|336| 11|NNW|  4| 18|  460 |
|18| 72.0 | 67.1 | 69.5 | 54|  58| 0.00| 29.76| 29.74|29.747| 0.8|349| 11|NNW|  4|353|  164 |
|19| 67.4 | 63.7 | 65.7 | 52|  62| 0.00| 29.77| 29.75|29.763| 0.8|  6| 10|  N|  2| 21|   52 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 63.7 | 58.6 | 61.1 | 51|  70| 0.00| 29.78| 29.77|29.771| 0.1|  6|  5|  N|  2|  7|    2 |
|21| 58.6 | 55.1 | 56.8 | 50|  79| 0.00| 29.79| 29.78|29.785| 0.0|  5|  2|  N|  0|  5|    0 |
|22| 55.1 | 51.7 | 53.4 | 49|  84| 0.00| 29.79| 29.78|29.788| 0.0|  5|  0|  N|  0|  5|    0 |
|23| 52.6 | 51.2*| 51.5 | 48|  88| 0.00| 29.80| 29.78|29.793| 0.1| 34|  6|NNE|  2| 33|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 29.80| 29.73|29.761| 1.4|270| 16|  N|  8|356| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     62.9    | 66.0 | 54|66.0| 4.57|  23  |  16+ | ---- | -- | - |   14  |   14  | 255.1|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | 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.