WXSIM: Chelmer Village
Updated: Tuesday, 23.07.2019 18:00
 
Tonight

Partly Cloudy
Partly Cloudy
Wednesday

Partly Cloudy
Partly Cloudy
Wednesday
night
Partly Cloudy
Partly Cloudy
Thursday

Sunny
Sunny
Thursday
night
Thunder storm
Thunder storm
Friday

Chance rain
Chance rain
Friday
night
Mostly Cloudy
Mostly Cloudy
Saturday

Chance rain
Chance rain
Saturday
night
Mostly Cloudy
Mostly Cloudy
<2 mm. <2 mm. 5 mm. <5 mm. <2 mm. <5 mm. <2 mm.
Low: 20° High: 32° Low: 18° High: 35° Low: 20° High: 31° Low: 17° High: 23° Low: 15°



























 

WU Forecast: Chelmsford

Tonight
Mostly Clear
Mostly Clear
Tomorrow
Partly Cloudy
Partly Cloudy
Tomorrow night
Partly Cloudy
Partly Cloudy
Thursday
Sunny
Sunny
Thursday night
Partly Cloudy
Partly Cloudy
Friday
Partly Cloudy
Partly Cloudy
Friday night
Showers
Showers
Saturday
Showers
Showers
Saturday night
Showers
Showers
20°C32°C18°C36°C20°C30°C17°C22°C15°C

WXSIM Forecast Accuracy

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

Morning

Updated: 07-23-19 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
07-23-19 34   30 21   20 32   33 20   19 39   34 19   20 27   33 17   18
07-22-19 29 31 30 16 15 16 34   30 23   20 33   34 20   20 36   37 18   19
07-21-19 24 26 26 16 16 16 30 31 30 16 15 16 34   30 22   19 33   34 20   20
07-20-19 24 26 24 13 13 13 25 26 27 16 16 14 30 31 30 17 15 16 34   29 23   19
07-19-19 21 21 22 17 16 17 24 26 26 14 13 14 25 26 28 16 16 15 30 31 31 16 15 15
07-18-19 25 26 27 13 12 13 21 21 25 17 16 17 24 26 26 14 13 14 26 26 27 15 16 14
07-17-19 25 27 26 15 16 15 25 26 24 13 12 14 21 21 25 17 16 16 23 26 27 15 13 14
07-16-19 26 29 26 14 13 13 25 27 27 15 16 15 24 26 24 13 12 12 22 21 24 16 16 15
07-15-19 23 23 23 13 10 11 26 29 26 15 13 14 26 27 27 15 16 16 24 26 25 14 12 12
07-14-19 23 22 23 12 13 11 23 23 21 13 10 11 26 29 25 15 13 13 26 27 27 15 16 14
07-13-19 24 23 25 15 13 12 23 22 22 12 13 11 23 23 20 13 10 11 25 29 26 15 13 14
07-12-19 25 27 26 14 16 14 24 23 25 14 13 11 23 22 21 12 13 13 23 23 20 14 10 10
07-11-19 26 28 28 16 17 15 24 27 25 14 16 13 24 23 24 13 13 11 24 22 23 13 13 11
07-10-19 25 27 26 16 17 16 26 28 26 16 17 14 24 27 25 14 16 13 23 23 24 13 13 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 12 12 12 13 10 10 11 10 9 8 10 10 8 7 9 9
% Succ 92.3   92.3 92.3   100.0 83.3   83.3 91.7   83.3 81.8   72.7 90.9   90.9 80.0   70.0 90.0   90.0
Ave Error 1.5   1.1 1.2   1.0 1.4   1.6 1.3   1.7 1.4   1.8 1.3   0.8 1.4   1.4 1.3   1.2
Net Error -1.2   -0.3 0.2   -0.4 -1.1   -0.4 0.4   -0.5 -1.0   -0.5 0.5   -0.3 -0.8   0.0 0.9   -0.8
Std Dev 0.9   0.9 0.8   0.7 1.0   1.3 0.9   0.8 1.1   1.6 1.0   0.7 1.1   1.2 1.0   1.0

Afternoon

Updated: 07-23-19 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
07-23-19 21   20 31   32 20   18 38   35 20   20 27   31 17   17 23   23
07-22-19 16 15 17 34 35 30 22   20 32   33 20   19 37   36 19   19 26   30
07-21-19 16 16 16 29 31 30 16 15 15 34 35 29 22   19 32   34 19   19 35   37
07-20-19 13 13 13 24 26 26 16 16 15 29 31 30 16 15 15 34 35 30 21   19 32   35
07-19-19 17 16 16 24 26 25 13 13 13 25 26 27 15 16 14 30 31 30 17 15 15 33 35 30
07-18-19 14 12 13 21 21 23 17 16 17 23 26 26 14 13 15 25 26 28 15 16 15 30 31 31
07-17-19 15 16 15 25 26 26 13 12 13 21 21 25 17 16 17 23 26 25 15 13 14 25 26 26
07-16-19 14 13 14 25 27 27 15 16 16 25 26 23 13 12 12 20 21 24 17 16 16 24 26 27
07-15-19 13 10 11 26 29 27 15 13 15 25 27 27 15 16 15 25 26 24 14 12 12 22 21 26
07-14-19 12 13 11 24 23 22 13 10 11 26 29 27 15 13 14 25 27 28 16 16 16 24 26 25
07-13-19 15 13 12 22 22 21 12 13 10 23 23 22 13 10 10 26 29 25 15 13 15 25 27 26
07-12-19 14 16 13 25 23 24 15 13 12 22 22 22 11 13 11 23 23 21 13 10 11 25 29 26
07-11-19 16 17 15 24 27 26 14 16 13 24 23 24 12 13 11 23 22 24 13 13 10 24 23 23
07-10-19 16 17 16 26 28 27 16 17 14 25 27 25 14 16 13 24 23 25 13 13 11 23 22 23
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 12 11 12 11 9 10 9 10 10 9 8 9 9 9 7
% Succ 92.3   92.3 84.6   92.3 91.7   75.0 83.3   75.0 90.9   90.9 81.8   72.7 90.0   90.0 90.0   70.0
Ave Error 1.2   1.2 1.6   1.2 1.3   1.3 1.3   1.8 1.5   1.3 1.4   2.3 1.3   1.0 1.7   1.7
Net Error 0.3   -0.4 -1.2   -0.8 0.4   -0.5 -1.2   -0.8 0.2   -0.5 -1.0   -0.5 1.1   -0.2 -1.1   -0.3
Std Dev 0.9   0.9 1.0   1.3 0.9   1.0 1.1   1.9 1.0   1.0 1.0   1.7 1.0   0.9 1.2   2.0