WxSim & WU Forecast Comparison

WesterhopeWX uses WXSim to produce a local forecast using the data gathered from the weather station and supplemented by other weather stations and weather buoys at 06:00, 11:00, 15:00, and 21:00. The following tables compare the accuracy of the temperature forecasts produced by Weather Underground and WXSim against the actual high and low temperature recorded by this weather station.

Morning Forecast @ 06:00

Weather Underground (WU), Actual Observed (Act), WxSim Generated (WS)
Updated: 22-09-18 at 05:52
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
22-09-18 13   13 5   7 12   12 4   5 14   14 6   5 15   15 9   9
19-09-18 18 13.8 20 9 7.7 14 14   18 6   10 12   12 7   7 13   14 7   7
18-09-18 20 20.9 21 11 13.7 13 18 13.8 20 9 7.7 11 13   13 7   10 13   12 7   7
17-09-18 21 19.3 16 13 13.4 7 20 20.9 15 12 13.7 10 18 13.8 16 9 7.7 12 15   19 8   13
16-09-18 17 17.2 16 10 11.6 7 20 19.3 15 16 13.4 10 19 20.9 16 12 13.7 12 17 13.8 19 10 7.7 13
15-09-18 16 16.1 16 12 12.6 7 18 17.2 15 9 11.6 10 19 19.3 16 15 13.4 12 19 20.9 19 13 13.7 13
14-09-18 14 16.2 16 8 7.3 7 16 16.1 15 12 12.6 10 17 17.2 16 9 11.6 12 19 19.3 19 13 13.4 13
13-09-18 16 15.5 16 11 11.6 7 14 16.2 15 7 7.3 10 16 16.1 16 11 12.6 12 17 17.2 19 9 11.6 13
12-09-18 16 16.2 16 9 9.9 7 15 15.5 15 11 11.6 10 14 16.2 16 8 7.3 12 16 16.1 19 11 12.6 13
11-09-18 16 16.7 16 9 11.2 7 15 16.2 15 9 9.9 10 16 15.5 16 11 11.6 12 15 16.2 19 9 7.3 13
09-09-18 17 15.2 16 10 11.3 7 16 16.7 15 11 11.2 10 16 16.2 16 9 9.9 12 16 15.5 19 7 11.6 13
08-09-18 18 16.6 16 11 12.7 7 18 15.2 15 10 11.3 10 16 16.7 16 12 11.2 12 16 16.2 19 9 9.9 13
07-09-18 16 14.1 16 8 8.3 7 18 16.6 15 11 12.7 10 18 15.2 16 10 11.3 12 16 16.7 19 13 11.2 13
06-09-18 15 14.8 17 6 5.6 9 16 14.1 16 9 8.3 10 17 16.6 17 9 12.7 13 18 15.2 19 10 11.3 13
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 10 11 3 9 8 10 6 8 8 9 8 8 3 7 7
% Succ 84.6   76.9 84.6   23.1 75.0   66.7 83.3   50.0 72.7   72.7 81.8   72.7 80.0   30.0 70.0   70.0
Ave Error 1.2   1.4 1.1   3.9 1.5   2.3 1.2   2.2 1.2   1.3 1.5   1.6 1.1   2.7 1.8   2.2
Net Error 0.6   0.4 -0.8   -2.4 0.5   -1.0 -0.4   -0.9 0.2   -0.6 -0.7   0.9 0.2   2.3 -0.6   2.0
Std Dev 1.1   1.7 0.7   2.0 1.1   1.9 0.8   1.0 1.2   1.4 0.5   1.4 0.9   1.2 0.6   1.8

Afternoon Forecast @ 11:00

Weather Underground (WU), Actual Observed (Act), WxSim Generated (WS)
Updated: 23-09-18 at 10:52
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
23-09-18 13   13 4   4 14   12 5   4 15   15 12   10 18   20 13   10
22-09-18 12 13.9 13 4 4.4 4 13   12 4   4 14   13 6   4 15   14 11   9
20-09-18 14 13.8 15 6 7.7 9 13 13.9 12 7 4.4 7 13   13 7   7 11   10 5   6
19-09-18 18 18.6 19 9 9.6 8 15 13.8 15 6 7.7 8 12 13.9 12 7 4.4 7 13   14 7   8
18-09-18 19 20.9 19 11 13.7 12 18 18.6 18 9 9.6 9 13 13.8 15 7 7.7 8 13 13.9 13 7 4.4 7
17-09-18 21 19.3 16 13 13.4 7 20 20.9 15 12 13.7 10 18 18.6 16 9 9.6 12 14 13.8 19 8 7.7 13
16-09-18 17 17.2 16 10 11.6 7 20 19.3 15 16 13.4 10 19 20.9 16 11 13.7 12 18 18.6 19 10 9.6 13
15-09-18 16 16.1 16 12 12.6 7 18 17.2 15 10 11.6 10 19 19.3 16 16 13.4 12 19 20.9 19 13 13.7 13
14-09-18 14 16.2 16 7 7.3 7 16 16.1 15 12 12.6 10 18 17.2 16 9 11.6 12 19 19.3 19 14 13.4 13
13-09-18 16 15.5 16 11 11.6 7 14 16.2 15 6 7.3 10 16 16.1 16 12 12.6 12 17 17.2 19 9 11.6 13
11-09-18 16 16.2 16 9 9.9 7 16 15.5 15 8 11.6 10 15 16.2 16 11 7.3 12 15 16.1 19 9 12.6 13
09-09-18 18 15.2 16 10 11.3 7 16 16.2 15 11 9.9 10 16 15.5 16 9 11.6 12 16 16.2 19 7 7.3 13
08-09-18 17 16.6 16 11 12.7 7 18 15.2 15 10 11.3 10 15 16.2 16 12 9.9 12 15 15.5 19 9 11.6 13
07-09-18 16 14.1 16 8 8.3 7 18 16.6 15 11 12.7 10 18 15.2 16 10 11.3 12 16 16.2 19 13 9.9 13
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 12 12 6 10 9 9 6 10 8 4 7 10 5 5 5
% Succ 84.6   92.3 92.3   46.2 83.3   75.0 75.0   50.0 90.9   72.7 36.4   63.6 100.0   50.0 50.0   50.0
Ave Error 1.1   1.0 1.0   3.1 1.0   1.8 1.7   1.9 1.1   1.5 2.0   1.6 0.6   2.3 1.7   2.4
Net Error 0.0   -0.3 -1.0   -2.9 0.2   -1.6 -0.7   -1.0 -0.4   -1.1 -0.0   0.9 -0.6   1.6 -0.3   2.2
Std Dev 0.9   0.8 0.7   2.0 0.5   1.5 0.8   1.1 0.6   1.3 1.0   1.2 0.5   1.3 0.9   1.3

Evening Forecast @ 15:00

Weather Underground (WU), Actual Observed (Act), WxSim Generated (WS)
Updated: 23-09-18 at 14:52
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
23-09-18 14   13 4   4 14   12 5   5 15   17 12   12 18   20 13   9
20-09-18 15 13.9 14 6 4.4 9 13   12 7   8 13   14 7   8 11   10 5   6
19-09-18 19 18.6 17 9 9.6 8 15 13.9 14 6 4.4 9 13   12 7   8 13   14 7   7
17-09-18 19 20.9 16 13 13.7 7 19 18.6 15 12 9.6 10 18 13.9 16 9 4.4 12 13   19 8   13
16-09-18 17 17.2 16 10 11.6 7 20 20.9 15 16 13.7 10 19 18.6 16 11 9.6 12 18 13.9 19 10 4.4 13
15-09-18 16 16.1 16 12 12.6 7 18 17.2 15 11 11.6 10 19 20.9 16 16 13.7 12 19 18.6 19 13 9.6 13
14-09-18 16 16.2 16 7 7.3 7 16 16.1 15 12 12.6 10 18 17.2 16 9 11.6 12 19 20.9 19 14 13.7 13
13-09-18 16 15.5 16 11 11.6 7 14 16.2 15 6 7.3 10 16 16.1 16 12 12.6 12 17 17.2 19 9 11.6 13
12-09-18 16 16.2 16 9 9.9 7 15 15.5 15 11 11.6 10 14 16.2 16 7 7.3 12 16 16.1 19 12 12.6 13
11-09-18 17 16.7 16 9 11.2 7 15 16.2 15 9 9.9 10 15 15.5 16 10 11.6 12 15 16.2 19 9 7.3 13
10-09-18 15 15.2 16 11 11.3 7 16 16.7 15 9 11.2 10 16 16.2 16 8 9.9 12 16 15.5 19 9 11.6 13
09-09-18 18 18.2 16 10 11.6 7 16 15.2 15 11 11.3 10 16 16.7 16 9 11.2 12 16 16.2 19 7 9.9 13
08-09-18 16 16.6 16 12 12.7 7 17 18.2 15 10 11.6 10 15 15.2 16 12 11.3 12 15 16.7 19 9 11.2 13
07-09-18 13 14.1 16 8 8.3 7 18 16.6 15 11 12.7 10 18 18.2 16 9 11.6 12 16 15.2 19 13 11.3 13
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 3 11 8 9 7 9 7 6 7 9 3 4 6
% Succ 100.0   84.6 92.3   23.1 91.7   66.7 75.0   58.3 81.8   63.6 54.5   63.6 90.0   30.0 40.0   60.0
Ave Error 0.5   1.2 0.9   3.9 0.9   1.9 1.3   2.0 1.0   1.4 1.9   2.0 1.1   2.7 2.4   2.8
Net Error -0.2   -0.6 -0.7   -3.2 -0.2   -1.9 -0.3   -0.7 -0.1   -0.8 -0.3   1.6 0.1   2.4 0.2   2.7
Std Dev 0.5   1.3 0.6   1.6 0.5   1.5 0.7   1.2 1.1   1.3 1.1   2.0 1.1   1.1 1.4   2.3

Night Forecast @ 21:00

Weather Underground (WU), Actual Observed (Act), WxSim Generated (WS)
Updated: 23-09-18 at 20:52
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
23-09-18 4   5 14   13 5   5 15   16 12   12 18   20 13   9 17   16
18-09-18 12 4.4 12 18 13.8 17 9   11 14   15 7   9 12   11 7   6 13   13
17-09-18 13 13.4 15 20 20.9 20 12 4.4 13 17 13.8 18 9   9 14   15 8   11 13   13
16-09-18 17 10.8 16 10 19.3 7 20 13.4 15 14 20.9 10 20 4.4 16 12 13.8 12 18   19 11   13
15-09-18 16 17.2 16 12 12.6 7 17 10.8 15 11 19.3 10 20 13.4 16 16 20.9 12 19 4.4 19 12 13.8 13
13-09-18 16 16.1 16 11 7.1 7 14 17.2 15 8 12.6 10 16 10.8 16 12 19.3 12 17 13.4 19 9 20.9 13
12-09-18 16 15.5 16 9 9.9 7 16 16.1 15 11 7.1 10 14 17.2 16 7 12.6 12 16 10.8 19 11 19.3 13
11-09-18 17 16.2 16 9 10.7 7 16 15.5 15 9 9.9 10 15 16.1 16 11 7.1 12 14 17.2 19 8 12.6 13
10-09-18 15 16.7 16 11 10.9 7 16 16.2 15 9 10.7 10 16 15.5 16 9 9.9 12 16 16.1 19 11 7.1 13
09-09-18 18 15.2 16 10 11.6 7 16 16.7 15 11 10.9 10 16 16.2 16 9 10.7 12 16 15.5 19 7 9.9 13
07-09-18 15 18.2 16 7 12.7 7 17 15.2 15 12 11.6 10 18 16.7 16 10 10.9 12 16 16.2 19 12 10.7 13
06-09-18 16 15.4 16 5 5.4 7 16 18.2 15 8 12.7 10 18 15.2 16 11 11.6 12 18 16.7 19 10 10.9 13
05-09-18 8 14.8 11 14 8.7 17 6 15.4 9 16 5.4 16 9 18.2 10 16 12.7 18 9 15.2 13 17 11.6 17
04-09-18 8 8.3 10 17 19.9 18 8 14.8 9 14 8.7 16 7 15.4 9 16 5.4 15 10 18.2 11 16 12.7 17
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 8 9 7 4 5 6 4 4 4 6 5 5 4 1 3 2
% Succ 61.5   69.2 53.8   30.8 41.7   50.0 33.3   33.3 36.4   54.5 45.5   45.5 40.0   10.0 30.0   20.0
Ave Error 2.5   2.0 2.9   4.2 3.8   3.1 4.2   4.5 4.9   3.4 3.8   3.9 4.3   5.1 4.4   3.9
Net Error 0.4   0.8 -0.8   -2.2 0.0   -0.7 -0.3   -0.3 0.9   0.4 -0.5   0.6 0.7   3.2 -1.7   0.9
Std Dev 2.5   2.1 2.6   3.1 2.6   2.2 2.5   3.3 4.1   3.2 1.9   2.5 3.8   3.4 2.8   2.2