WXSIM: Chelmer Village
Updated: Tuesday, 20.04.2021 18:00
 
Tonight

Partly Cloudy
Partly Cloudy
Wednesday

Mostly Cloudy
Mostly Cloudy
Wednesday
night
Mostly Clear
Mostly Clear
Thursday

Mostly Sunny
Mostly Sunny
Thursday
night
Clear
Clear
Friday

Sunny
Sunny
Friday
night
Partly Cloudy
Partly Cloudy
Saturday

Mostly Cloudy
Mostly Cloudy
Saturday
night
Mostly Clear
Mostly Clear
<2 mm. <2 mm.
Low: 7° High: 14° Low: 2° High: 13° Low: 2° High: 14° Low: 4° High: 14° Low: 4°



























 

WU Forecast: Chelmsford

Tonight
Partly Cloudy
Partly Cloudy
Tomorrow
Partly Cloudy
Partly Cloudy
Tomorrow night
Mostly Clear
Mostly Clear
Thursday
Mostly Sunny
Mostly Sunny
Thursday night
Clear
Clear
Friday
Sunny
Sunny
Friday night
Partly Cloudy
Partly Cloudy
Saturday
Mostly Cloudy
Mostly Cloudy
Saturday night
Partly Cloudy
Partly Cloudy
4°C12°C1°C12°C1°C12°C3°C13°C3°C

WXSIM Forecast Accuracy

Actual Observed (Act), WxSim Generated (WS) , Weather Underground (WU)

Morning Forecast

Updated: 04-20-21 at 9:10 am
Goal Forecast Day Day +1 Day +2 Day +3
± 2.0° C High Low High Low High Low High Low
Date WU Act WS WU Act WS WU Act WS WU Act WS WU Act WS WU Act WS WU Act WS WU Act WS
04-20-21 17   14 6   5 14   13 3   1 14   13 2   3 15   14 4   4
04-19-21 4 17 3 17 1.3 16 4   4 17   16 6   5 13   13 2   2 14   13
04-18-21 14 2.1 14 2 15.6 2 17 17 16 3 1.3 5 17   16 6   5 14   13 3   2
04-17-21 13 14.1 13 2 -0.6 1 14 2.1 13 3 15.6 2 15 17 14 4 1.3 4 16   15 6   5
04-16-21 12 13.3 10 0 -1.6 0 13 14.1 12 1 -0.6 0 14 2.1 13 2 15.6 3 16 17 15 4 1.3 5
04-15-21 10 11.3 9 0 -1.8 -1 12 13.3 12 0 -1.6 0 13 14.1 13 2 -0.6 2 14 2.1 15 3 15.6 4
04-14-21 12 12.5 12 0 -1.2 0 11 11.3 11 0 -1.8 0 12 13.3 12 0 -1.6 0 13 14.1 13 2 -0.6 3
04-13-21 12 13.2 11 2 1.3 0 12 12.5 11 0 -1.2 0 11 11.3 11 1 -1.8 1 12 13.3 12 1 -1.6 0
04-12-21 0 12.1 -2 10 -2.9 10 0 13.2 0 12 1.3 12 2 12.5 2 12 -1.2 12 0 11.3 0 11 -1.8 10
04-11-21 10 -0.4 10 0 10.9 2 10 12.1 11 0 -2.9 1 12 13.2 10 2 1.3 0 12 12.5 11 2 -1.2 1
04-10-21 8 8.9 7 2 -0.9 3 9 -0.4 10 0 10.9 -1 10 12.1 10 1 -2.9 -1 12 13.2 12 3 1.3 2
04-09-21 12 14.7 12 4 4.6 4 8 8.9 8 1 -0.9 0 9 -0.4 9 -1 10.9 -1 12 12.1 13 2 -2.9 1
04-08-21 11 14.3 14 4 4.4 4 12 14.7 11 4 4.6 2 7 8.9 9 1 -0.9 1 8 -0.4 9 -1 10.9 -1
04-07-21 8 9.3 10 0 2.3 -1 12 14.3 12 4 4.4 3 12 14.7 13 4 4.6 3 7 8.9 7 2 -0.9 1
Results WU Act WS WU Act WS WU Act WS WU Act WS WU Act WS WU Act WS WU Act WS WU Act WS
# Succ 7 5 6 7 6 6 8 6 6 5 4 5 7 7 1 3
% Succ 53.8   38.5 46.2   53.8 50.0   50.0 66.7   50.0 54.5   45.5 36.4   45.5 70.0   70.0 10.0   30.0
Ave Error 4.7   5.0 5.2   5.0 3.8   4.1 4.0   4.5 4.0   4.0 5.0   4.9 3.9   4.4 5.8   5.3
Net Error -1.3   -1.5 0.9   0.7 -0.3   -0.5 -0.1   -0.4 -0.2   -0.3 0.3   -0.1 0.2   0.3 0.9   0.6
Std Dev 4.9   5.2 5.7   5.4 4.8   4.7 4.4   4.8 4.2   4.0 4.9   4.7 4.6   4.8 5.2   4.7