S
M
T
W
T
F
S
30
66°
48°
31
71°
45°
1
80°
50°
2
83°
53°
3
76°
45°
4
83°
55°
5
72°
50°
6
69°
56°
7
65°
50°
8
61°
47°
9
78°
47°
10
84°
49°
11
63°
42°
12
58°
44°
13
53°
43°
14
59°
37°
15
65°
42°
16
68°
38°
17
74°
43°
18
75°
43°
19
73°
44°
20
76°
47°
21
72°
42°
22
72°
40°
23
65°
46°
24
76°
45°
25
63°
45°
26
69°
44°
27
75°
43°
28
63°
39°
29
69°
41°
30
61°
37°
1
66°
43°
2
63°
41°
3
63°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Belknap Agency
Fort Belknap Agency's September 2026 forecast shows daily high temperatures ranging from 53° to 84°, with overnight lows between 30° and 49°. The average high for September is 68° 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 Fort Belknap Agency. See also: October | November | December.
