WXSIM: Chelmer Village
Updated: Friday, 23.05.2025 11:00 UTC
 
This
afternoon
Cloudy
Cloudy
Tonight

Chance rain
Chance rain
Saturday

Chance rain
Chance rain
Saturday
night
Cloudy
Cloudy
Sunday

Partly Cloudy
Partly Cloudy
Sunday
night
Partly Cloudy
Partly Cloudy
Monday

Mostly Cloudy
Mostly Cloudy
Monday
night
Rain likely
Rain likely
Tuesday

Chance rain
Chance rain
Tuesday
night
Rain likely
Rain likely
<5 mm. 2 mm. <2 mm. <2 mm. 10 mm. 2 mm. 7 mm.
High: 17° Low: 10° High: 21° Low: 10° High: 19° Low: 8° High: 17° Low: 9° High: 17° Low: 9°






























 

WU Forecast: Chelmsford

Tonight
Rain Late
Rain Late
Tomorrow
AM Rain
AM Rain
Tomorrow night
Cloudy
Cloudy
Sunday
Partly Cloudy
Partly Cloudy
Sunday night
Partly Cloudy
Partly Cloudy
Monday
Cloudy
Cloudy
Monday night
Showers Late
Showers Late
Tuesday
PM Showers
PM Showers
Tuesday night
Showers
Showers
11°C21°C13°C19°C9°C17°C11°C18°C13°C

WXSIM Forecast Accuracy

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

Morning Forecast

Updated: 05-23-25 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
05-23-25 19   17 12   10 21   21 14   10 19   19 11   8 17   18 12   10
05-22-25 16 13.8 13 6 4 3 19   17 12   5 21   22 14   10 19   20 10   8
05-21-25 18 17.1 19 7 5.3 6 16 13.8 16 7 4 5 19   19 12   8 20   20 14   11
05-20-25 22 20.8 20 12 11.1 10 18 17.1 18 7 5.3 5 16 13.8 16 6 4 4 19   19 11   6
05-19-25 19 18.3 18 9 6.8 8 22 20.8 20 12 11.1 8 18 17.1 20 7 5.3 6 17 13.8 17 7 4 4
05-18-25 19 17.2 20 9 8.6 7 20 18.3 19 8 6.8 7 22 20.8 21 11 11.1 8 18 17.1 17 9 5.3 5
05-17-25 21 18.4 21 9 10.3 8 18 17.2 18 9 8.6 8 20 18.3 19 8 6.8 8 22 20.8 21 10 11.1 10
05-16-25 21 15.4 19 9 9.9 8 21 18.4 20 8 10.3 7 20 17.2 20 9 8.6 8 20 18.3 20 9 6.8 9
05-15-25 17 13.9 18 7 5.9 6 22 15.4 20 9 9.9 8 21 18.4 19 8 10.3 6 20 17.2 17 8 8.6 5
05-14-25 24 20.9 19 8 7.6 6 18 13.9 16 7 5.9 5 22 15.4 19 9 9.9 7 22 18.4 20 9 10.3 7
05-13-25 24 21 22 9 8.1 8 23 20.9 21 8 7.6 7 18 13.9 18 7 5.9 6 21 15.4 21 9 9.9 8
05-12-25 23 23 23 11 10.8 11 24 21 21 9 8.1 8 23 20.9 21 8 7.6 6 18 13.9 18 7 5.9 7
05-11-25 25 20.9 21 13 11.8 11 23 23 22 11 10.8 11 24 21 20 9 8.1 8 23 20.9 20 8 7.6 7
05-10-25 23 19.6 19 11 9 9 25 20.9 21 13 11.8 9 23 23 21 11 10.8 10 23 21 20 10 8.1 8
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 5 9 12 12 5 9 10 9 4 6 10 8 4 7 7 7
% Succ 38.5   69.2 92.3   92.3 41.7   75.0 83.3   75.0 36.4   54.5 90.9   72.7 40.0   70.0 70.0   70.0
Ave Error 2.4   1.6 1.2   1.0 2.4   1.2 1.2   1.3 2.5   1.8 1.0   1.4 2.7   1.9 1.6   1.4
Net Error 2.4   0.9 0.8   -0.6 2.4   0.9 0.7   -1.0 2.5   1.3 0.4   -1.0 2.7   1.4 0.8   -0.8
Std Dev 1.6   1.3 0.7   0.7 1.8   1.3 0.9   1.1 2.0   1.5 0.8   1.5 1.9   1.6 1.4   1.4