NOAA Reports
Select a Year or Month report
Report for 2020 Dec
Monthly Climatological Summary for Dec 2020
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 5.1 7.8 12:44 3.2 23:57 3.8 0.0 0.0 1.5 16.0 09:41 NNW
02 4.2 6.7 14:50 0.7 04:31 7.8 0.0 0.2 0.0 3.0 14:11 N
03 5.4 7.3 14:23 3.8 22:05 6.6 0.0 28.2 0.0 10.0 15:26 N
04 3.7 4.7 13:55 1.5 06:59 8.3 0.0 21.8 2.0 14.0 05:03 SW
05 4.3 7.7 14:02 2.1 00:36 7.5 0.0 0.0 0.4 9.0 15:12 ESE
06 3.5 6.4 13:55 0.4 23:36 8.5 0.0 2.0 0.5 7.0 04:51 NNE
07 1.2 2.1 13:35 0.4 00:00 10.8 0.0 0.2 0.1 5.0 02:41 NNW
08 2.7 4.9 14:14 1.6 00:23 9.3 0.0 1.2 0.0 5.0 20:42 N
09 5.3 6.9 12:52 4.0 00:27 6.7 0.0 6.8 0.0 8.0 02:18 SW
10 5.9 7.3 23:47 4.9 00:00 6.1 0.0 0.2 1.1 10.0 17:23 SSE
11 8.7 10.5 11:38 5.9 23:23 3.3 0.0 10.0 0.0 6.0 00:00 S
12 7.2 8.5 11:24 3.8 23:40 4.8 0.0 1.4 1.0 12.0 12:33 W
13 6.8 11.5 21:59 2.2 05:09 5.2 0.0 3.6 2.7 20.0 19:54 SSW
14 10.4 12.4 13:18 8.2 23:58 1.6 0.0 4.6 3.3 23.0 05:05 SW
15 8.7 11.1 13:22 7.4 23:58 3.2 0.0 0.4 1.0 12.0 12:22 SSW
16 8.6 10.3 13:40 6.8 01:47 3.4 0.0 0.8 2.4 19.0 11:53 SSW
17 9.0 11.3 13:52 6.7 07:22 3.0 0.0 0.0 2.3 18.0 21:47 SW
18 11.2 11.8 20:03 10.6 00:00 0.8 0.0 0.4 6.9 25.0 11:47 SSW
19 9.9 12.1 13:52 8.0 23:49 1.7 0.0 4.0 4.2 23.0 13:44 SW
20 7.6 9.7 12:25 4.7 23:09 4.4 0.0 1.6 2.4 17.0 02:24 SW
21 10.5 13.4 15:38 5.1 02:23 2.0 0.0 9.4 3.0 17.0 11:03 SW
22 10.8 13.6 02:39 9.5 16:05 1.4 0.0 0.6 2.0 19.0 00:58 WSW
23 10.8 12.5 13:15 7.5 23:57 1.2 0.0 6.6 0.7 17.0 23:13 SW
24 4.5 7.5 00:00 2.6 20:12 7.5 0.0 1.4 7.4 22.0 02:17 NNW
25 2.0 4.8 13:47 0.5 07:56 10.0 0.0 0.0 3.6 17.0 00:17 NNW
26 6.6 10.5 21:50 0.9 02:22 5.4 0.0 0.2 5.4 29.0 21:43 SW
27 6.1 10.5 00:00 0.8 23:50 5.9 0.0 14.6 4.3 35.0 00:34 WSW
28 2.3 4.0 13:07 0.1 08:18 9.7 0.0 0.2 0.7 11.0 20:36 N
29 2.5 3.8 20:31 1.1 08:24 9.5 0.0 0.0 0.7 13.0 02:47 NW
30 1.8 4.3 14:24 -0.3 23:38 10.2 0.0 0.2 0.5 10.0 10:35 W
31 -0.1 1.4 23:43 -1.4 08:50 12.1 0.0 0.0 0.4 11.0 04:40 NNW
----------------------------------------------------------------------------------
6.0 13.6 22 -1.4 31 181.7 0.0 120.6 2.0 35.0 27 WSW
Max >= 35.7 0
Max <= 33.6 31
Min <= -20.6 0
Min <= -18.0 0
Max Rain: 28.2 on day 3
Days of Rain: 25 (>= 0.2 mm) 11 (>= 2.0 mm) 2 (>= 20.0 mm)
Heat Base: 12.0 Cool Base: 24.0 Method: Integration