WXSIM: Chelmer Village
Updated: Sunday, 19.01.2025 17:00 UTC
 
Tonight

Cloudy
Cloudy
Monday

Overcast
Overcast
Monday
night
Fog late
Fog late
Tuesday

Fog a.m.
Fog a.m.
Tuesday
night
Light Fog
Light Fog
Wednesday

Rain likely
Rain likely
Wednesday
night
Rain likely
Rain likely
Thursday

Chance rain
Chance rain
Thursday
night
Chance rain
Chance rain
5 mm. 5 mm. <5 mm. 2 mm.
Low: 2° High: 7° Low: 2° High: 8° Low: 3° High: 7° Low: 4° High: 9° Low: 4°



























 

WU Forecast: Chelmsford

Tonight
Cloudy
Cloudy
Tomorrow
Cloudy
Cloudy
Tomorrow night
Cloudy
Cloudy
Tuesday
Cloudy
Cloudy
Tuesday night
Light Rain Late
Light Rain Late
Wednesday
Light Rain
Light Rain
Wednesday night
Light Rain Early
Light Rain Early
Thursday
PM Rain
PM Rain
Thursday night
Showers Late
Showers Late
0°C5°C1°C5°C1°C5°C1°C8°C2°C

WXSIM Forecast Accuracy

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

Morning Forecast

Updated: 01-19-25 at 9:20 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
01-19-25 4   5 2   2 6   6 1   3 5   8 2   3 5   8 2   5
01-18-25 2 4.1 7 1 1.9 1 3   7 1   2 6   9 1   3 5   8 1   4
01-17-25 6 6.6 9 0 2.4 2 2 4.1 9 1 1.9 1 4   8 2   3 6   8 1   3
01-16-25 9 9.7 12 3 4.1 3 5 6.6 9 1 2.4 2 3 4.1 8 1 1.9 1 5   8 4   2
01-15-25 10 10.2 12 5 7 5 8 9.7 10 3 4.1 3 5 6.6 9 0 2.4 2 3 4.1 8 0 1.9 2
01-14-25 9 9.8 9 6 8.4 5 9 10.2 12 5 7 4 8 9.7 11 3 4.1 3 6 6.6 10 1 2.4 1
01-13-25 6 6.9 8 2 2.1 3 9 9.8 9 6 8.4 3 10 10.2 11 3 7 4 8 9.7 10 3 4.1 2
01-12-25 3 4.3 4 -1 2.2 0 6 6.9 6 2 2.1 0 9 9.8 8 4 8.4 3 7 10.2 11 2 7 4
01-11-25 1 3.9 4 -3 -4.6 -2 4 4.3 5 0 2.2 -1 7 6.9 6 2 2.1 0 9 9.8 8 5 8.4 1
01-10-25 1 2.4 3 -4 -4.1 -2 2 3.9 5 -4 -4.6 -2 3 4.3 5 1 2.2 -1 8 6.9 8 5 2.1 2
01-09-25 4 4 4 -4 -4.4 -2 2 2.4 4 -3 -4.1 -1 2 3.9 5 -1 -4.6 -1 6 4.3 5 3 2.2 0
01-08-25 2 2.7 4 -2 0.1 1 4 4 4 -3 -4.4 -1 3 2.4 5 -2 -4.1 0 3 3.9 6 1 -4.6 -1
01-07-25 5 4.6 5 -2 -0.5 0 2 2.7 4 -1 0.1 -1 3 4 4 -3 -4.4 0 3 2.4 3 -1 -4.1 0
01-06-25 6 7.8 11 1 0.6 1 6 4.6 5 -2 -0.5 0 2 2.7 5 -1 0.1 0 2 4 4 -2 -4.4 0
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 11 9 9 8 11 10 10 5 11 7 6 4 9 7 4 3
% Succ 84.6   69.2 69.2   61.5 91.7   83.3 83.3   41.7 100.0   63.6 54.5   36.4 90.0   70.0 40.0   30.0
Ave Error 1.1   1.3 1.4   1.5 1.1   1.4 1.3   2.2 1.0   1.6 2.0   2.6 1.4   1.5 2.8   2.8
Net Error -1.0   1.2 -1.0   0.0 -0.9   1.1 -0.8   -0.6 -0.9   1.1 -0.7   -0.4 -0.7   1.1 0.2   -0.4
Std Dev 0.8   1.0 1.0   1.0 0.8   1.3 0.8   1.6 0.8   1.2 1.7   1.9 1.1   1.4 2.0   2.7