LOCAL CLIMATOLOGICAL DATA
Hourly Summary
December 20, 2024

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| 17.4 | 17.1 | 17.3 | 14|  85| 0.00| 30.31| 30.30|30.304| 0.1|351|  4|  N|  1|351|    0 |
|01| 17.3 | 17.1 | 17.2 | 13|  85| 0.00| 30.31| 30.29|30.298| 0.0|351|  0|  N|  0|351|    0 |
|02| 17.3 | 17.1 | 17.2 | 13|  85| 0.00| 30.30| 30.28|30.295| 0.0|351|  0|  N|  0|351|    0 |
|03| 17.2 | 16.9 | 17.0 | 13|  85| 0.00| 30.29| 30.26|30.272| 0.0|351|  0|  N|  0|351|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| 17.0 | 16.6 | 16.8 | 13|  86| 0.00| 30.26| 30.24|30.252| 0.0|351|  0|  N|  0|351|    0 |
|05| 17.2 | 16.5*| 16.7 | 14|  88| 0.00| 30.25| 30.25|30.250| 0.0|351|  0|  N|  0|351|    0 |
|06| 17.4 | 17.1 | 17.3 | 14|  88| 0.00| 30.26| 30.24|30.250| 0.0|351|  0|  N|  0|351|    0 |
|07| 17.1 | 16.6 | 16.8 | 14|  88| 0.00| 30.24| 30.24|30.240| 0.0|351|  0|  N|  0|351|    4 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08| 18.1 | 16.7 | 17.4 | 15|  89| 0.00| 30.24| 30.23|30.237| 0.0|351|  2|  N|  0|351|   34 |
|09| 19.7 | 18.1 | 18.8 | 16|  88| 0.00| 30.24| 30.22|30.233| 0.1|351|  3|  N|  2|351|   62 |
|10| 21.3 | 19.7 | 20.6 | 17|  85| 0.00| 30.23| 30.19|30.212| 0.0|351|  1|  N|  0|351|   95 |
|11| 22.5 | 21.3 | 21.8 | 17|  81| 0.00| 30.19| 30.15|30.167| 0.0|351|  2|  N|  0|351|   87 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 23.1 | 22.5 | 22.9 | 18|  81| 0.00| 30.16| 30.11|30.129| 0.0|351|  0|  N|  0|351|   69 |
|13| 23.2*| 22.8 | 23.0 | 19|  85| 0.00| 30.11| 30.08|30.093| 0.0|351|  0|  N|  0|351|   50 |
|14| 22.9 | 22.1 | 22.4 | 19|  87| 0.00| 30.09| 30.07|30.078| 0.0|351|  0|  N|  0|351|   22 |
|15| 22.2 | 21.1 | 21.9 | 19|  88| 0.00| 30.09| 30.08|30.088| 0.0|351|  0|  N|  0|351|    7 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 21.1 | 19.8 | 20.2 | 17|  89| 0.00| 30.09| 30.08|30.086| 0.0|351|  0|  N|  0|351|    0 |
|17| 20.0 | 19.8 | 19.9 | 17|  90| 0.00| 30.09| 30.08|30.082| 0.1|351|  4|  N|  1|351|    0 |
|18| 19.8 | 19.1 | 19.6 | 17|  90| 0.00| 30.08| 30.07|30.073| 0.1|351|  5|  N|  1|351|    0 |
|19| 19.1 | 17.6 | 18.0 | 15|  89| 0.00| 30.08| 30.06|30.066| 0.0|350|  1|  N|  0|350|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 17.7 | 17.2 | 17.5 | 15|  90| 0.00| 30.06| 30.03|30.046| 0.0|350|  3|  N|  0|350|    0 |
|21| 17.7 | 17.1 | 17.4 | 15|  90| 0.00| 30.03| 30.01|30.024| 0.1|350|  3|  N|  1|350|    0 |
|22| 17.8 | 16.8 | 17.5 | 15|  90| 0.00| 30.01| 29.99|30.000| 0.1|350|  4|  N|  1|350|    0 |
|23| 16.9 | 16.7 | 16.8 | 14|  90| 0.00| 29.99| 29.97|29.982| 0.6|336|  9| NW|  3|329|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 30.31| 29.97|30.157| 0.0|343|  9| NW|  3|329| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     19.9    | 18.8 | 16|87.2| 3.06|   0  |  23  | ---- | -- | - |   23  |   23  |  17.9|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  45|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                1.5 | of Snow, Ice Pellets or Ice     2 |  .........  | 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.