S
M
T
W
T
F
S
30
59°
44°
31
64°
50°
1
63°
50°
2
65°
49°
3
65°
46°
4
59°
42°
5
66°
45°
6
67°
46°
7
68°
48°
8
67°
49°
9
67°
48°
10
66°
48°
11
64°
47°
12
65°
47°
13
64°
41°
14
60°
46°
15
62°
49°
16
64°
46°
17
66°
44°
18
62°
41°
19
52°
38°
20
51°
39°
21
49°
36°
22
48°
37°
23
46°
38°
24
48°
34°
25
51°
35°
26
48°
33°
27
46°
36°
28
47°
37°
29
44°
32°
30
45°
29°
1
Hist. Avg.
47°
35°
2
Hist. Avg.
46°
35°
3
Hist. Avg.
46°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Summer Beaver
Summer Beaver's September 2026 forecast shows daily high temperatures ranging from 44° to 68°, with overnight lows between 29° and 50°. The average high for September is 58° with an average low of 42°. 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 Summer Beaver. See also: October | November | December.