WxSim & NWS Forecast Comparison
National Weather Service (NW), Actual Observed (Act), WxSim Generated (WS)
Morning Forecasts
Updated: 10-08-25 at 5:00 pm |
Goal |
Forecast Day |
Day +1 |
Day +2 |
Day +3 |
± 2.0° F |
Low |
High |
Low |
High |
Low |
High |
Low |
High |
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 |
10-08-25 |
61 |
|
63 |
72 |
|
72 |
47 |
|
47 |
60 |
|
64 |
37 |
|
43 |
63 |
|
65 |
49 |
|
51 |
67 |
|
70 |
10-07-25 |
77 |
58.6 |
84 |
60 |
76.8 |
63 |
71 |
|
73 |
46 |
|
46 |
61 |
|
64 |
44 |
|
44 |
63 |
|
68 |
49 |
|
49 |
10-06-25 |
60 |
77.5 |
83 |
79 |
55.8 |
57 |
59 |
58.6 |
81 |
78 |
76.8 |
61 |
58 |
|
71 |
70 |
|
46 |
46 |
|
63 |
61 |
|
46 |
10-05-25 |
80 |
82.0 |
83 |
59 |
54.1 |
55 |
75 |
77.5 |
82 |
60 |
55.8 |
57 |
75 |
58.6 |
80 |
58 |
76.8 |
60 |
71 |
|
70 |
48 |
|
46 |
10-04-25 |
50 |
82.4 |
79 |
78 |
48.4 |
57 |
58 |
82.0 |
82 |
79 |
54.1 |
57 |
59 |
77.5 |
82 |
76 |
55.8 |
58 |
60 |
58.6 |
80 |
76 |
76.8 |
62 |
10-03-25 |
70 |
71.8 |
74 |
54 |
41.5 |
52 |
78 |
82.4 |
79 |
58 |
48.4 |
56 |
78 |
82.0 |
82 |
59 |
54.1 |
56 |
76 |
77.5 |
82 |
60 |
55.8 |
57 |
10-02-25 |
65 |
68.0 |
69 |
48 |
44.2 |
50 |
69 |
71.8 |
75 |
52 |
41.5 |
54 |
77 |
82.4 |
79 |
58 |
48.4 |
57 |
77 |
82.0 |
81 |
59 |
54.1 |
57 |
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 |
2 |
|
2 |
0 |
|
2 |
1 |
|
1 |
1 |
|
1 |
0 |
|
1 |
0 |
|
1 |
2 |
|
1 |
1 |
|
1 |
% Succ |
33.3 |
|
33.3 |
|
|
33.3 |
20.0 |
|
20.0 |
20.0 |
|
20.0 |
|
|
25.0 |
|
|
25.0 |
66.7 |
|
33.3 |
33.3 |
|
33.3 |
Ave Error |
12.5 |
|
6.4 |
15.1 |
|
6.8 |
6.8 |
|
6.7 |
10.1 |
|
8.0 |
11.1 |
|
7.3 |
13.4 |
|
7.4 |
2.6 |
|
9.0 |
3.3 |
|
6.3 |
Net Error |
-6.4 |
|
5.3 |
9.5 |
|
2.2 |
-6.7 |
|
5.3 |
10.1 |
|
1.7 |
-2.9 |
|
5.6 |
4.0 |
|
-1.0 |
-1.7 |
|
8.3 |
2.8 |
|
-3.6 |
Std Dev |
10.6 |
|
8.3 |
8.0 |
|
4.7 |
8.4 |
|
7.7 |
8.2 |
|
5.2 |
2.7 |
|
7.0 |
2.7 |
|
4.7 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
|
|
Mid-Day Forecasts
Updated: 10-08-25 at 5:00 pm |
Goal |
Forecast Day |
Day +1 |
Day +2 |
Day +3 |
± 2.0° F |
Low |
High |
Low |
High |
Low |
High |
Low |
High |
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 |
10-08-25 |
72 |
|
63 |
47 |
|
72 |
60 |
|
47 |
37 |
|
64 |
63 |
|
43 |
49 |
|
65 |
67 |
|
51 |
53 |
|
70 |
10-07-25 |
77 |
69.6 |
83 |
60 |
76.8 |
61 |
71 |
|
71 |
46 |
|
46 |
61 |
|
63 |
44 |
|
44 |
63 |
|
66 |
49 |
|
50 |
10-06-25 |
79 |
77.5 |
85 |
59 |
58.6 |
58 |
78 |
69.6 |
81 |
58 |
76.8 |
61 |
70 |
|
71 |
46 |
|
45 |
61 |
|
63 |
46 |
|
45 |
10-05-25 |
80 |
82.0 |
87 |
59 |
55.8 |
57 |
75 |
77.5 |
82 |
60 |
58.6 |
56 |
75 |
69.6 |
80 |
58 |
76.8 |
61 |
71 |
|
71 |
48 |
|
45 |
10-04-25 |
79 |
82.4 |
84 |
58 |
54.1 |
59 |
79 |
82.0 |
83 |
59 |
55.8 |
57 |
76 |
77.5 |
82 |
60 |
58.6 |
57 |
76 |
69.6 |
80 |
58 |
76.8 |
64 |
10-03-25 |
70 |
71.8 |
76 |
54 |
48.4 |
54 |
78 |
82.4 |
80 |
58 |
54.1 |
57 |
78 |
82.0 |
82 |
59 |
55.8 |
56 |
76 |
77.5 |
81 |
60 |
58.6 |
57 |
10-02-25 |
65 |
68.0 |
71 |
48 |
41.5 |
51 |
69 |
71.8 |
75 |
52 |
48.4 |
53 |
77 |
82.4 |
79 |
58 |
54.1 |
57 |
77 |
82.0 |
81 |
59 |
55.8 |
57 |
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 |
3 |
|
1 |
1 |
|
2 |
0 |
|
1 |
1 |
|
1 |
1 |
|
1 |
1 |
|
2 |
1 |
|
1 |
1 |
|
2 |
% Succ |
50.0 |
|
16.7 |
16.7 |
|
33.3 |
|
|
20.0 |
20.0 |
|
20.0 |
25.0 |
|
25.0 |
25.0 |
|
50.0 |
33.3 |
|
33.3 |
33.3 |
|
66.7 |
Ave Error |
3.2 |
|
5.8 |
6.1 |
|
6.3 |
4.2 |
|
4.5 |
6.2 |
|
5.4 |
4.1 |
|
4.6 |
6.8 |
|
5.1 |
4.3 |
|
5.0 |
7.8 |
|
5.2 |
Net Error |
-0.2 |
|
5.8 |
0.5 |
|
0.8 |
-0.9 |
|
3.5 |
-1.3 |
|
-1.9 |
-1.4 |
|
2.9 |
-2.6 |
|
-3.6 |
0.0 |
|
4.3 |
-4.7 |
|
-4.4 |
Std Dev |
2.0 |
|
3.7 |
5.2 |
|
5.0 |
2.1 |
|
3.5 |
6.2 |
|
5.2 |
0.7 |
|
2.9 |
6.0 |
|
5.3 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
|
|
Evening Forecasts
Updated: 10-08-25 at 5:00 pm |
Goal |
Forecast Day |
Day +1 |
Day +2 |
Day +3 |
± 2.0° F |
Low |
High |
Low |
High |
Low |
High |
Low |
High |
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 |
10-08-25 |
72 |
|
63 |
48 |
|
72 |
60 |
|
47 |
40 |
|
64 |
63 |
|
43 |
49 |
|
65 |
68 |
|
51 |
53 |
|
70 |
10-07-25 |
60 |
69.6 |
63 |
71 |
76.8 |
72 |
47 |
|
47 |
60 |
|
64 |
43 |
|
43 |
63 |
|
65 |
49 |
|
51 |
66 |
|
70 |
10-06-25 |
75 |
58.6 |
58 |
60 |
77.5 |
81 |
75 |
69.6 |
61 |
61 |
76.8 |
71 |
71 |
|
45 |
46 |
|
63 |
61 |
|
46 |
44 |
|
67 |
10-05-25 |
80 |
55.8 |
57 |
58 |
82.0 |
82 |
78 |
58.6 |
57 |
58 |
77.5 |
81 |
77 |
69.6 |
61 |
59 |
76.8 |
70 |
70 |
|
46 |
47 |
|
63 |
10-04-25 |
80 |
54.1 |
60 |
55 |
82.4 |
83 |
80 |
55.8 |
57 |
58 |
82.0 |
82 |
76 |
58.6 |
57 |
59 |
77.5 |
80 |
76 |
69.6 |
60 |
60 |
76.8 |
72 |
10-03-25 |
70 |
48.4 |
54 |
52 |
71.8 |
79 |
78 |
54.1 |
58 |
59 |
82.4 |
82 |
79 |
55.8 |
57 |
57 |
82.0 |
81 |
76 |
58.6 |
57 |
60 |
77.5 |
81 |
10-02-25 |
65 |
41.5 |
50 |
48 |
68.0 |
75 |
70 |
48.4 |
54 |
54 |
71.8 |
79 |
77 |
54.1 |
57 |
58 |
82.4 |
81 |
78 |
55.8 |
57 |
59 |
82.0 |
82 |
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 |
|
2 |
0 |
|
2 |
0 |
|
2 |
0 |
|
2 |
0 |
|
2 |
0 |
|
2 |
0 |
|
2 |
0 |
|
1 |
% Succ |
|
|
33.3 |
|
|
33.3 |
|
|
40.0 |
|
|
40.0 |
|
|
50.0 |
|
|
50.0 |
|
|
66.7 |
|
|
33.3 |
Ave Error |
20.2 |
|
4.7 |
19.1 |
|
3.9 |
18.9 |
|
4.2 |
20.1 |
|
3.4 |
17.7 |
|
3.6 |
21.4 |
|
2.9 |
15.3 |
|
4.1 |
19.1 |
|
2.8 |
Net Error |
17.0 |
|
2.3 |
-19.1 |
|
2.3 |
18.9 |
|
0.1 |
-20.1 |
|
0.9 |
17.7 |
|
-1.5 |
-21.4 |
|
-1.7 |
15.3 |
|
-3.3 |
-19.1 |
|
-0.4 |
Std Dev |
5.4 |
|
2.4 |
6.7 |
|
2.5 |
6.5 |
|
2.6 |
2.6 |
|
1.9 |
5.2 |
|
2.5 |
1.8 |
|
1.9 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
|
|
Nighttime Forecasts
Updated: 10-08-25 at 5:00 pm |
Goal |
Forecast Day |
Day +1 |
Day +2 |
Day +3 |
± 2.0° F |
Low |
High |
Low |
High |
Low |
High |
Low |
High |
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 |
10-08-25 |
72 |
|
46 |
48 |
|
65 |
60 |
|
43 |
40 |
|
68 |
63 |
|
51 |
49 |
|
71 |
68 |
|
56 |
53 |
|
65 |
10-07-25 |
60 |
69.6 |
63 |
71 |
76.8 |
72 |
47 |
|
47 |
60 |
|
64 |
43 |
|
43 |
63 |
|
65 |
49 |
|
51 |
66 |
|
70 |
10-06-25 |
75 |
58.6 |
56 |
60 |
77.5 |
81 |
75 |
69.6 |
61 |
61 |
76.8 |
71 |
71 |
|
46 |
46 |
|
63 |
61 |
|
45 |
44 |
|
66 |
10-05-25 |
80 |
55.8 |
55 |
58 |
82.0 |
81 |
78 |
58.6 |
57 |
58 |
77.5 |
81 |
77 |
69.6 |
63 |
59 |
76.8 |
72 |
70 |
|
44 |
47 |
|
64 |
10-04-25 |
80 |
54.1 |
54 |
55 |
82.4 |
80 |
80 |
55.8 |
55 |
58 |
82.0 |
81 |
76 |
58.6 |
56 |
59 |
77.5 |
80 |
76 |
69.6 |
60 |
60 |
76.8 |
70 |
10-03-25 |
70 |
48.4 |
52 |
52 |
71.8 |
78 |
78 |
54.1 |
58 |
59 |
82.4 |
81 |
79 |
55.8 |
57 |
57 |
82.0 |
81 |
76 |
58.6 |
58 |
60 |
77.5 |
81 |
10-02-25 |
48 |
41.5 |
41 |
70 |
68.0 |
73 |
54 |
48.4 |
53 |
77 |
71.8 |
79 |
58 |
54.1 |
56 |
78 |
82.4 |
81 |
59 |
55.8 |
55 |
76 |
82.0 |
81 |
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 |
|
3 |
1 |
|
1 |
0 |
|
2 |
0 |
|
2 |
0 |
|
2 |
0 |
|
2 |
0 |
|
2 |
0 |
|
1 |
% Succ |
|
|
50.0 |
16.7 |
|
16.7 |
|
|
40.0 |
|
|
40.0 |
|
|
50.0 |
|
|
50.0 |
|
|
66.7 |
|
|
33.3 |
Ave Error |
17.4 |
|
2.4 |
16.1 |
|
3.8 |
15.7 |
|
3.9 |
17.6 |
|
3.8 |
13.0 |
|
3.1 |
16.4 |
|
2.4 |
9.0 |
|
3.7 |
13.4 |
|
3.8 |
Net Error |
14.2 |
|
-1.2 |
-15.4 |
|
1.1 |
15.7 |
|
-0.5 |
-15.5 |
|
0.5 |
13.0 |
|
-1.5 |
-16.4 |
|
-1.2 |
9.0 |
|
-3.7 |
-13.4 |
|
-1.4 |
Std Dev |
5.8 |
|
2.1 |
7.2 |
|
1.7 |
6.2 |
|
2.7 |
3.1 |
|
1.5 |
2.8 |
|
1.8 |
0.7 |
|
1.2 |
0.0 |
|
0.0 |
0.0 |
|
0.0 |
|
|