S
M
T
W
T
F
S
30
76°
42°
31
82°
43°
1
72°
50°
2
58°
46°
3
51°
44°
4
60°
41°
5
66°
36°
6
58°
39°
7
68°
35°
8
78°
43°
9
86°
52°
10
82°
50°
11
77°
46°
12
75°
45°
13
59°
38°
14
69°
40°
15
76°
42°
16
67°
47°
17
68°
45°
18
71°
43°
19
78°
46°
20
82°
47°
21
81°
46°
22
81°
42°
23
80°
41°
24
79°
46°
25
76°
43°
26
70°
45°
27
71°
44°
28
69°
44°
29
67°
43°
30
65°
42°
1
63°
43°
2
71°
40°
3
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Bidwell
Fort Bidwell's September 2026 forecast shows daily high temperatures ranging from 63° to 82°, with overnight lows between 40° and 47°. The average high for September is 73° with an average low of 44°. 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 Fort Bidwell. See also: October | November | December.