S
M
T
W
T
F
S
30
71°
64°
31
81°
64°
1
78°
58°
2
78°
49°
3
83°
56°
4
76°
61°
5
73°
63°
6
81°
62°
7
78°
65°
8
83°
63°
9
71°
55°
10
80°
46°
11
77°
58°
12
61°
45°
13
62°
36°
14
57°
34°
15
65°
44°
16
68°
36°
17
63°
42°
18
65°
45°
19
67°
55°
20
63°
42°
21
60°
42°
22
62°
42°
23
67°
46°
24
59°
53°
25
64°
57°
26
61°
56°
27
73°
44°
28
67°
40°
29
71°
60°
30
75°
49°
1
59°
39°
2
60°
34°
3
62°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bemidji
Bemidji's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Bemidji. See also: October | November | December.