NOAA Reports
Select a Year or Month report
Report for 2017 Dec
Monthly Climatological Summary for Dec 2017
Name: CM2Weather City: Chelmsford State: Essex
Elevation: 66 m Lat: N 51 42 38 Lon: E 000 28 14
Temperature (°C), Rain (mm), Wind Speed (mph)
Heat Cool Avg
Mean Deg Deg Wind Dom
Day Temp High Time Low Time Days Days Rain Speed High Time Dir
----------------------------------------------------------------------------------
01 3.6 6.9 13:27 1.8 03:50 8.4 0.0 0.6 6.6 20.0 06:02 NNW
02 4.4 8.3 14:01 1.9 04:12 7.6 0.0 0.0 1.4 11.0 01:01 WNW
03 7.6 9.2 14:31 5.8 23:42 4.4 0.0 0.0 1.2 11.0 10:26 NW
04 6.1 8.7 14:29 2.6 08:04 5.9 0.0 0.2 0.9 9.0 11:00 WNW
05 7.9 8.4 23:46 7.4 07:44 4.1 0.0 0.0 1.9 13.0 23:13 WSW
06 9.1 10.7 12:53 8.1 07:24 2.9 0.0 0.0 4.4 22.0 21:57 SW
07 8.4 11.7 12:24 3.6 23:55 3.6 0.0 1.4 6.5 26.0 06:06 WSW
08 2.5 4.6 13:36 -0.2 23:16 9.5 0.0 0.0 4.4 20.0 10:11 WNW
09 0.9 5.1 13:40 -0.9 06:10 11.1 0.0 0.2 2.5 12.0 12:13 WSW
10 1.3 3.4 06:17 0.7 23:51 10.7 0.0 5.6 1.7 17.0 06:39 ENE
11 1.3 2.7 07:32 -0.4 23:57 10.7 0.0 13.6 5.0 20.0 07:55 N
12 0.8 4.6 23:57 -2.4 07:21 11.2 0.0 3.8 2.7 12.0 21:14 SW
13 5.6 8.4 15:40 3.2 23:55 6.4 0.0 12.8 4.5 20.0 15:58 WSW
14 3.8 6.5 13:44 2.2 21:38 8.2 0.0 0.0 5.2 21.0 12:13 WSW
15 3.2 5.3 15:21 1.1 07:16 8.8 0.0 3.0 5.2 21.0 15:09 NW
16 1.8 4.6 14:11 -0.1 06:46 10.2 0.0 0.0 2.2 15.0 00:34 WNW
17 3.2 8.8 20:33 -1.9 07:02 8.8 0.0 2.0 2.9 18.0 18:16 WSW
18 3.4 7.7 14:09 1.5 20:51 8.6 0.0 0.2 1.7 13.0 00:01 NW
19 4.4 7.4 13:25 1.2 01:55 7.6 0.0 0.2 1.9 9.0 09:42 WSW
20 8.8 10.2 21:15 7.0 00:35 3.2 0.0 0.0 1.3 10.0 11:24 WSW
21 10.4 11.5 13:20 9.3 23:29 1.6 0.0 0.8 1.5 10.0 14:07 WSW
22 9.9 11.7 13:24 8.1 05:10 2.1 0.0 0.0 0.7 9.0 00:38 W
23 9.2 9.8 02:18 8.6 19:05 2.8 0.0 0.0 3.8 17.0 19:06 WSW
24 9.3 10.6 23:57 8.3 03:52 2.7 0.0 0.0 5.8 20.0 06:02 WSW
25 10.0 10.9 14:17 7.2 23:59 2.0 0.0 2.4 8.0 31.0 22:56 SW
26 5.7 7.7 13:52 3.8 08:11 6.3 0.0 9.2 4.9 19.0 00:01 SW
27 3.2 7.3 01:05 0.6 23:48 8.8 0.0 4.8 6.3 30.0 09:43 NW
28 1.7 6.1 13:58 -0.1 08:09 10.3 0.0 0.2 2.6 14.0 13:19 W
29 4.5 8.6 13:29 -0.5 03:30 7.5 0.0 7.4 4.3 20.0 12:04 WSW
30 10.6 13.5 14:23 5.0 01:27 1.7 0.0 3.2 6.2 26.0 09:22 WSW
31 10.6 13.1 06:41 7.2 23:55 1.6 0.0 2.4 7.3 25.0 06:31 SW
----------------------------------------------------------------------------------
5.6 13.5 30 -2.4 12 199.3 0.0 74.0 3.7 31.0 25 W
Max >= 35.7 0
Max <= 33.6 31
Min <= -20.6 0
Min <= -18.0 0
Max Rain: 13.6 on day 11
Days of Rain: 20 (>= 0.2 mm) 12 (>= 2.0 mm) 0 (>= 20.0 mm)
Heat Base: 12.0 Cool Base: 24.0 Method: Integration