S
M
T
W
T
F
S
30
77°
69°
31
79°
70°
1
80°
70°
2
78°
64°
3
70°
63°
4
70°
62°
5
71°
63°
6
73°
59°
7
71°
64°
8
75°
67°
9
77°
68°
10
77°
60°
11
76°
58°
12
71°
66°
13
77°
67°
14
78°
66°
15
76°
66°
16
77°
67°
17
78°
67°
18
77°
66°
19
77°
65°
20
76°
56°
21
73°
54°
22
66°
62°
23
70°
63°
24
73°
63°
25
74°
58°
26
75°
52°
27
65°
53°
28
63°
52°
29
62°
51°
30
63°
52°
1
62°
57°
2
66°
60°
3
70°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Windfall
Windfall's September 2026 forecast shows daily high temperatures ranging from 62° to 80°, with overnight lows between 51° and 70°. The average high for September is 73° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Windfall. See also: October | November | December.
