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WxSim & NWS Forecast Comparison

National Weather Service (NW), Actual Observed (Act), WxSim Generated (WS)
Updated: 12-06-25 at 7:00 am
Goal Forecast Day Day +1 Day +2 Day +3
± 2.0° F High Low High Low High Low High Low
Date NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
12-06-25 31   24 17   10 32   20 19   10 28   20 14   9 23   22 13   11
11-06-25 23 21.8 24 12 13.9 10 30   20 18   10 32   20 19   9 26   22 15   11
10-06-25 19 21.8 24 9 13.9 10 23 21.8 20 13 13.9 10 30   20 17   9 31   22 19   11
09-06-25 20 21.8 24 12 13.9 10 20 21.8 20 11 13.9 10 25 21.8 20 13 13.9 9 30   22 17   11
08-06-25 17 21.8 24 11 13.9 10 20 21.8 20 12 13.9 10 20 21.8 20 12 13.9 9 25 21.8 22 14 13.9 11
07-06-25 18 21.8 24 11 13.9 10 17 21.8 20 11 13.9 10 20 21.8 20 11 13.9 9 22 21.8 22 12 13.9 11
06-06-25 20 21.8 24 12 13.9 10 16 21.8 20 11 13.9 10 17 21.8 20 10 13.9 9 20 21.8 22 11 13.9 11
05-06-25 18 21.8 24 13 13.9 10 19 21.8 20 13 13.9 10 18 21.8 20 12 13.9 9 16 21.8 22 9 13.9 11
04-06-25 19 21.8 24 13 13.9 10 17 21.8 20 13 13.9 10 19 21.8 20 12 13.9 9 17 21.8 22 11 13.9 11
03-06-25 24 21.8 24 14 13.9 10 19 21.8 20 13 13.9 10 17 21.8 20 13 13.9 9 20 21.8 22 13 13.9 11
02-06-25 20 21.8 24 9 13.9 10 24 21.8 20 14 13.9 10 19 21.8 20 13 13.9 9 18 21.8 22 14 13.9 11
01-06-25 21 21.8 24 11 13.9 10 20 21.8 20 9 13.9 10 24 21.8 20 13 13.9 9 18 21.8 22 12 13.9 11
31-05-25 26 21.8 24 14 13.9 10 20 21.8 20 11 13.9 10 19 21.8 20 10 13.9 9 25 21.8 22 13 13.9 11
30-05-25 24 21.8 24 13 13.9 10 26 21.8 20 14 13.9 10 21 21.8 20 11 13.9 9 20 21.8 22 11 13.9 11
Results NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
# Succ 5 0 8 0 5 12 7 0 3 11 7 0 4 10 6 0
% Succ 38.5   0.0 61.5   0.0 41.7   100.0 58.3   0.0 27.3   100.0 63.6   0.0 40.0   100.0 60.0   0.0
Ave Error 2.6   2.2 2.1   3.9 3.0   1.8 1.9   3.9 2.9   1.8 2.1   4.9 3.0   0.2 1.9   2.9
Net Error -1.1   2.2 -2.1   -3.9 -1.7   -1.8 -1.8   -3.9 -1.9   -1.8 -2.1   -4.9 -1.7   0.2 -1.9   -2.9
Std Dev 1.2   0.0 1.5   0.0 1.4   0.0 1.3   0.0 1.0   0.0 0.9   0.0 1.5   0.0 1.2   0.0

Updated: 12-06-25 at 7:00 am
Goal Forecast Day Day +1 Day +2 Day +3
± 2.0° F High Low High Low High Low High Low
Date NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
12-06-25 18   24 32   10 20   20 30   10 15   20 23   9 13   22 24   11
11-06-25 13 21.8 24 31 13.9 10 17   20 32   10 19   20 27   9 15   22 22   11
10-06-25 9 21.8 24 23 13.9 10 12 21.8 20 30 13.9 10 17   20 31   9 19   22 25   11
09-06-25 12 21.8 24 20 13.9 10 10 21.8 20 24 13.9 10 13 21.8 20 30 13.9 9 17   22 33   11
08-06-25 10 21.8 24 21 13.9 10 12 21.8 20 20 13.9 10 12 21.8 20 25 13.9 9 14 21.8 22 31 13.9 11
07-06-25 12 21.8 24 17 13.9 10 11 21.8 20 21 13.9 10 12 21.8 20 21 13.9 9 13 21.8 22 25 13.9 11
06-06-25 12 21.8 24 17 13.9 10 11 21.8 20 17 13.9 10 11 21.8 20 20 13.9 9 11 21.8 22 22 13.9 11
05-06-25 13 21.8 24 19 13.9 10 12 21.8 20 17 13.9 10 11 21.8 20 17 13.9 9 9 21.8 22 20 13.9 11
04-06-25 12 21.8 24 18 13.9 10 13 21.8 20 19 13.9 10 13 21.8 20 17 13.9 9 11 21.8 22 16 13.9 11
03-06-25 14 21.8 24 19 13.9 10 13 21.8 20 16 13.9 10 13 21.8 20 19 13.9 9 12 21.8 22 18 13.9 11
02-06-25 9 21.8 24 24 13.9 10 14 21.8 20 20 13.9 10 13 21.8 20 17 13.9 9 13 21.8 22 20 13.9 11
01-06-25 11 21.8 24 20 13.9 10 10 21.8 20 24 13.9 10 13 21.8 20 19 13.9 9 13 21.8 22 19 13.9 11
31-05-25 14 21.8 24 21 13.9 10 11 21.8 20 19 13.9 10 9 21.8 20 24 13.9 9 13 21.8 22 18 13.9 11
30-05-25 14 21.8 24 26 13.9 10 15 21.8 20 21 13.9 10 11 21.8 20 20 13.9 9 11 21.8 22 24 13.9 11
Results NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
# Succ 0 0 0 0 0 12 0 0 0 11 0 0 0 10 0 0
% Succ     0.0     0.0     100.0     0.0     100.0     0.0     100.0     0.0
Ave Error 9.9   2.2 7.3   3.9 9.8   1.8 6.8   3.9 9.9   1.8 6.9   4.9 9.8   0.2 7.4   2.9
Net Error -9.9   2.2 7.3   -3.9 -9.8   -1.8 6.8   -3.9 -9.9   -1.8 6.9   -4.9 -9.8   0.2 7.4   -2.9
Std Dev 1.6   0.0 3.6   0.0 1.2   0.0 3.7   0.0 0.8   0.0 3.7   0.0 1.3   0.0 3.9   0.0