WXSIM: Chelmer Village
Updated: Saturday, 16.11.2019 18:00
 
Tonight

Mostly Cloudy
Mostly Cloudy
Sunday

Mostly Cloudy
Mostly Cloudy
Sunday
night
Fog late
Fog late
Monday

Cloudy
Cloudy
Monday
night
Chance rain
Chance rain
Tuesday

Overcast
Overcast
Tuesday
night
Partly Cloudy
Partly Cloudy
Wednesday

Mostly Cloudy
Mostly Cloudy
Wednesday
night
Overcast
Overcast
<2 mm. <2 mm. <2 mm. <2 mm. 2 mm. <2 mm. <2 mm. <2 mm. <2 mm.
Low: 3° High: 9° Low: 3° High: 9° Low: 4° High: 7° Low: 0° High: 10° Low: 7°



























 

WU Forecast: Chelmsford

Tonight
Mostly Cloudy
Mostly Cloudy
Tomorrow
Mostly Cloudy
Mostly Cloudy
Tomorrow night
Showers
Showers
Monday
Mostly Cloudy
Mostly Cloudy
Monday night
Mostly Cloudy
Mostly Cloudy
Tuesday
Partly Cloudy
Partly Cloudy
Tuesday night
Mostly Cloudy
Mostly Cloudy
Wednesday
Mostly Cloudy
Mostly Cloudy
Wednesday night
Cloudy
Cloudy
1°C8°C4°C8°C2°C7°C2°C9°C5°C

WXSIM Forecast Accuracy

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

Morning

Updated: 11-16-19 at 6:00 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
11-16-19 8   9 0   2 9   9 4   3 8   9 -1   4 7   7 5   2
11-15-19 9 9 9 4 5 3 8   9 1   0 8   9 4   4 8   9 1   -1
11-14-19 8 9 8 3 3 4 9 9 9 4 5 5 8   10 5   5 9   10 5   4
11-13-19 9 10 9 4 5 3 8 9 8 4 3 2 8 9 9 4 5 4 8   9 3   5
11-12-19 8 8 8 3 3 1 9 10 8 4 5 3 7 9 9 5 3 3 8 9 8 4 5 4
11-11-19 9 9 8 3 3 2 9 8 8 3 3 1 9 10 8 4 5 3 7 9 7 3 3 4
11-10-19 11 8 10 4 3 4 9 9 9 3 3 2 9 8 9 4 3 2 9 10 8 4 5 5
11-09-19 8 8 9 4 5 5 10 8 10 4 3 4 9 9 9 3 3 3 9 8 9 1 3 2
11-08-19 10 8 7 0   1 9 8 8 5 5 5 10 8 9 3 3 2 9 9 9 4 3 2
11-07-19 10 10 9 1 -1 3 9 8 9 1   2 8 8 8 4 5 3 8 8 9 2 3 3
11-06-19 10 9 11 6 7 4 10 10 11 3 -1 4 9 8 10 1   1 9 8 10 4 5 2
11-05-19 13 13 13 4 4 4 10 9 9 6 7 6 10 10 11 4 -1 4 10 8 10 2   1
11-04-19 12 13 14 6 4 4 13 13 13 4 4 3 10 9 10 5 7 5 10 10 11 6 -1 5
11-03-19 13 13 14 7 6 6 13 13 14 7 4 5 13 13 14 5 4 3 10 9 10 5 7 4
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 12 13 13 11 12 12 10 11 11 11 10 10 10 10 9 7
% Succ 92.3   100.0 100.0   84.6 100.0   100.0 83.3   91.7 100.0   100.0 90.9   90.9 100.0   100.0 90.0   70.0
Ave Error 0.7   0.9 0.8   1.3 0.7   0.7 1.1   1.4 0.8   0.8 1.4   1.5 0.9   1.3 1.8   1.7
Net Error 0.2   0.2 0.2   -0.2 0.3   0.2 0.6   0.1 0.1   0.5 0.5   -0.4 0.1   0.3 0.2   -0.1
Std Dev 0.9   0.7 0.7   1.2 0.6   0.8 1.1   1.4 0.8   0.8 1.0   1.0 0.8   1.0 1.4   1.4

Afternoon

Updated: 11-16-19 at 6:00 pm
Goal Forecast Day Day +1 Day +2 Day +3
± 2.0° C Low High Low High Low High Low High
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
11-16-19 1   3 8   9 5   3 9   9 1   4 7   7 4   0 9   10
11-15-19 4 5 3 8 8 9 1   1 8   9 5   3 8   9 1   0 8   7
11-14-19 3 3 2 9 9 8 3 5 2 9 8 9 4   2 8   9 3   4 8   9
11-13-19 4 5 4 7 9 7 3 3 4 9 9 9 5 5 5 9 8 9 6   5 8   10
11-12-19 3 3 1 9 10 8 4 5 3 8 9 9 3 3 3 8 9 9 5 5 4 8 8 9
11-11-19 3 3 2 8 8 8 2 3 1 9 10 9 4 5 3 8 9 8 4 3 4 8 9 8
11-10-19 4 3 10 9 9 4 3 3 9 9 8 2 4 3 9 9 10 2 4 5 8 7 9 5
11-09-19 6 8 4 11 5 10 4 3 4 9 9 9 3 3 2 9 8 9 4 3 3 9 10 9
11-08-19 0   0 9 8 9 5 8 5 10 5 10 3 3 3 9 9 9 3 3 2 8 8 8
11-07-19 0 -1 1 9 8 9 0   4 8 8 9 4 8 4 9 5 9 3 3 4 10 9 10
11-06-19 6 7 6 10 10 10 3 -1 4 9 8 8 0   4 8 8 9 3 8 2 8 5 9
11-05-19 4 4 3 10 9 10 5 7 5 10 10 10 6 -1 5 10 8 11 1   3 9 8 10
11-04-19 5 4 4 13 13 13 4 4 3 10 9 9 6 7 6 10 10 11 2 -1 5 9 8 10
11-03-19 7 6 7 12 13 13 7 4 5 12 13 12 4 4 3 9 9 9 4 7 5 11 10 10
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 11 12 11 9 7 11 10 9 7 10 8 7 6 9 8
% Succ 100.0   84.6 92.3   84.6 75.0   58.3 91.7   83.3 81.8   63.6 90.9   72.7 70.0   60.0 90.0   80.0
Ave Error 0.7   1.8 1.0   1.5 1.4   2.6 1.0   1.3 1.3   2.3 1.0   1.8 1.5   2.4 1.1   1.6
Net Error -0.1   -0.2 0.4   -0.1 -0.1   0.4 0.5   -0.1 0.2   0.6 0.5   0.2 -0.3   0.4 0.3   0.4
Std Dev 0.6   1.9 1.6   1.6 1.3   1.8 1.4   2.0 1.4   2.2 1.1   2.4 1.3   1.9 0.9   1.4