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High Temp
C
 
Low Temp
C
 
Precipitation
mm
 
Sunniest
hours

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Cloudbase

Length of Day

8 hrs 10 min 27 sec
of Daylight Today
Which is
1 min 52 sec Longer
Than Yesterday
(Noon)
Day-Night Graphic
(Midnight)

Moon Phase


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Weather Underground PWS IESSEXCH11

WXSIM: Chelmer Village
Updated: Thursday, 08.01.2026 11:00 UTC
 
This
afternoon
Rain likely
Rain likely		 Tonight

Rain likely
Rain likely		 Friday

Rain and Snow
Rain and Snow		 Friday
night
Chance rain
Chance rain		 Saturday

Mostly Cloudy
Mostly Cloudy		 Saturday
night
Mostly Cloudy
Mostly Cloudy		 Sunday

Cloudy
Cloudy		 Sunday
night
Chance rain
Chance rain		 Monday

Rain likely
Rain likely		 Monday
night
Rain likely
Rain likely
5 mm. 10 mm. 10 mm. 2 mm. <2 mm. <5 mm. 7 mm. 5 mm.
High: 6° Low: 5° High: 6° Low: 2° High: 5° Low: 1° High: 6° Low: 1° High: 13° Low: 5°






























 

WU Forecast: Chelmsford

Today
Rain, Snow, Wind
Rain, Snow, Wind		Tonight
Snow Showers Early
Snow Showers Early		Tomorrow
Cloudy
Cloudy		Tomorrow night
Mostly Cloudy
Mostly Cloudy		Sunday
PM Light Rain
PM Light Rain		Sunday night
Light Rain
Light Rain		Monday
Showers
Showers		Monday night
Showers Late
Showers Late		Tuesday
Showers
Showers
6°C1°C3°C-2°C5°C5°C11°C7°C9°C

WXSIM Forecast Accuracy

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

Morning Forecast

Updated: 01-08-26 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
01-08-26 6   6 3   5 5   6 1   1 4   5 -1   2 7   6 7   2
01-07-26 6 5.9 5 1 1.7 2 6   5 2   1 4   4 1   2 4   4 -2   1
01-06-26 4 2.9 3 1 1.4 2 5 5.9 5 1 1.7 2 6   5 3   2 5   6 1   3
01-05-26 3 1.8 3 -7 -4.8 -4 4 2.9 3 1 1.4 -2 5 5.9 4 2 1.7 0 5   6 2   2
01-04-26 3 2.3 3 -4 -2.5 -3 2 1.8 2 -6 -4.8 -3 4 2.9 3 2 1.4 -2 4 5.9 6 2 1.7 2
01-03-26 3 2.2 3 -4 -4.1 -2 3 2.3 2 -4 -2.5 -2 2 1.8 2 -6 -4.8 -3 4 2.9 3 1 1.4 -2
01-02-26 4 3.3 3 -1 -1.7 0 3 2.2 3 -4 -4.1 -1 3 2.3 3 -4 -2.5 -1 2 1.8 3 -6 -4.8 -2
01-01-26 7 6.1 6 2 0.8 1 4 3.3 4 -2 -1.7 -1 3 2.2 3 -4 -4.1 -1 3 2.3 3 -4 -2.5 -1
12-31-25 4 4.8 6 0 -0.2 1 7 6.1 6 2 0.8 1 4 3.3 3 -2 -1.7 0 3 2.2 3 -3 -4.1 -1
12-30-25 7 7 6 0 -0.4 1 5 4.8 5 0 -0.2 1 7 6.1 7 2 0.8 0 5 3.3 5 -2 -1.7 -1
12-29-25 7 6.6 8 4 3.1 6 7 7 7 0 -0.4 1 4 4.8 6 1 -0.2 2 6 6.1 6 2 0.8 1
12-28-25 8 7.4 9 4 3.2 2 7 6.6 8 3 3.1 4 7 7 7 0 -0.4 0 5 4.8 6 1 -0.2 1
12-27-25 9 7.6 10 6 6.5 5 8 7.4 8 3 3.2 2 7 6.6 8 5 3.1 4 7 7 7 -1 -0.4 0
12-26-25 6 6.5 8 2 2.2 2 9 7.6 9 5 6.5 3 8 7.4 8 3 3.2 1 7 6.6 8 4 3.1 3
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 13 12 12 11 12 12 12 9 11 11 11 7 10 10 10 7
% Succ 100.0   92.3 92.3   84.6 100.0   100.0 100.0   75.0 100.0   100.0 100.0   63.6 100.0   100.0 100.0   70.0
Ave Error 0.7   1.0 0.8   1.1 0.7   0.6 0.7   1.5 0.6   0.7 0.8   1.8 0.7   0.7 0.9   1.4
Net Error 0.5   0.7 -0.1   0.6 0.5   0.3 -0.3   0.2 0.3   0.3 0.2   0.3 0.3   0.7 0.1   0.7
Std Dev 0.4   0.7 0.6   0.8 0.4   0.5 0.5   1.2 0.4   0.6 0.6   1.2 0.7   0.6 0.7   1.4