LOCAL CLIMATOLOGICAL DATA
Hourly Summary
December 13, 2018

Station: Westford
Latitude: 44° 37' 38" N
Longitude: 73° 02' 29" 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| -0.4 | -2.9 | -1.5 | -4|  87| 0.00| 30.35| 30.33|30.341| 0.0|226|  0|  N|  0|360|    0 |
|01| -0.7 | -3.8 | -2.5 | -5|  87| 0.00| 30.35| 30.34|30.347| 0.0| 32|  0|  N|  0|360|    0 |
|02| -2.4 | -3.9 | -3.2 | -6|  87| 0.00| 30.36| 30.35|30.359| 0.0| 32|  0|  N|  0|360|    0 |
|03| -1.9 | -3.0 | -2.7 | -6|  87| 0.00| 30.38| 30.36|30.367| 0.0| 32|  0|  N|  0|360|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|04| -0.8 | -3.2 | -1.7 | -5|  87| 0.00| 30.39| 30.37|30.380| 0.0| 32|  0|  N|  0|360|    0 |
|05| -3.2 | -4.6*| -3.9 | -7|  86| 0.00| 30.39| 30.38|30.389| 0.0| 57|  0|  N|  0|360|    0 |
|06| -3.1 | -4.2 | -3.6 | -7|  87| 0.00| 30.40| 30.39|30.397| 0.0| 56|  0|  N|  0|360|    0 |
|07| -1.9 | -3.8 | -2.6 | -6|  87| 0.00| 30.42| 30.40|30.414| 0.0| 57|  0|  N|  0|360|    8 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|08|  3.7 | -2.2 | -0.6 | -4|  87| 0.00| 30.44| 30.42|30.434| 0.0| 56|  0|  N|  0|360|   37 |
|09| 11.3 |  3.7 |  8.1 |  5|  88| 0.00| 30.45| 30.44|30.449| 0.0| 57|  0|  N|  0|360|  172 |
|10| 17.6 | 11.3 | 13.1 |  8|  81| 0.00| 30.46| 30.44|30.448| 0.0|220|  0|  N|  0|360|  184 |
|11| 24.4 | 17.6 | 21.9 |  8|  55| 0.00| 30.44| 30.43|30.433| 1.3|204|  9|  S|  4|193|  270 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|12| 26.5 | 24.4 | 25.3 |  7|  45| 0.00| 30.43| 30.41|30.419| 2.6|193| 11|  S|  6|200|  280 |
|13| 28.0*| 26.4 | 27.3 | 10|  47| 0.00| 30.42| 30.41|30.416| 3.7|205| 15|SSW|  8|201|  230 |
|14| 27.5 | 25.6 | 26.4 | 12|  54| 0.00| 30.43| 30.42|30.424| 2.0|209| 11|  S|  6|210|   89 |
|15| 27.2 | 25.3 | 26.3 | 14|  60| 0.00| 30.45| 30.43|30.444| 2.7|203| 12|SSW|  6|200|   49 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|16| 25.4 | 25.1 | 25.3 | 15|  65| 0.00| 30.46| 30.45|30.455| 2.4|197| 13|  S|  5|194|    1 |
|17| 25.4 | 24.6 | 25.0 | 16|  69| 0.00| 30.46| 30.45|30.455| 3.9|201| 19| SW|  9|202|    0 |
|18| 25.7 | 25.3 | 25.4 | 18|  72| 0.00| 30.47| 30.45|30.459| 4.5|205| 14|  S|  9|206|    0 |
|19| 26.1 | 25.6 | 25.8 | 19|  75| 0.00| 30.48| 30.46|30.473| 3.2|211| 12|SSW|  6|207|    0 |
|  |      |      |      |   |    |     |      |      |      |    |   |   |   |   |   |      |
|20| 27.0 | 26.1 | 26.7 | 20|  76| 0.00| 30.47| 30.46|30.465| 4.7|202| 14|  S|  8|196|    0 |
|21| 27.1 | 26.8 | 27.0 | 21|  78| 0.00| 30.48| 30.47|30.471| 5.1|194| 15|  S| 14|183|    0 |
|22| 27.0 | 26.7 | 26.8 | 21|  78| 0.00| 30.48| 30.46|30.468| 3.6|199| 16|SSW|  8|205|    0 |
|23| 27.3 | 26.3 | 27.0 | 21|  79| 0.00| 30.46| 30.44|30.451| 4.7|200| 18|SSW|  8|198|    0 |
+--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- |Total|                For the day:                 | ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   | ---- | ---- | ---- | - | -- | 0.00| 30.48| 30.33|30.423| 1.9|201| 19| SW| 14|183| ---- |
   +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+
   |     Avg     | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - |  Hour |  Hour |  Avg |
   +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+
   |     11.7    | 14.0 |  7|75.2| 1.02|  19  |   0  | ---- | -- | - |   17  |   21  |  55.0|
   +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+
   | Total Snow,        |                                   |             |      |  Heat  53|
   | Ice Pellets        | Greatest Depth on Ground          | Precip Types|Degree+----------+
   |                0.0 | of Snow, Ice Pellets or Ice     5 |  .........  | 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.
   Column 17: Solar Radiation is measured in Watts/m² and is continuously averaged for each hour.
   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.
   Data in columns 4B, 5, 6, 10, 11, 17 are updated continuously, there by achieving a
       "true" mean.