S
M
T
W
T
F
S
30
62°
50°
31
65°
51°
1
72°
50°
2
72°
50°
3
67°
49°
4
68°
49°
5
71°
48°
6
70°
48°
7
60°
47°
8
65°
47°
9
66°
49°
10
69°
47°
11
60°
44°
12
57°
40°
13
56°
35°
14
62°
45°
15
67°
44°
16
67°
46°
17
68°
45°
18
69°
46°
19
70°
45°
20
69°
42°
21
65°
41°
22
64°
44°
23
66°
46°
24
68°
41°
25
63°
41°
26
63°
43°
27
64°
44°
28
64°
43°
29
61°
37°
30
61°
38°
1
60°
28°
2
52°
26°
3
47°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Foisy
Foisy's September 2026 forecast shows daily high temperatures ranging from 47° to 72°, with overnight lows between 26° and 51°. The average high for September is 64° with an average low of 43°. 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 Foisy. See also: October | November | December.