S
M
T
W
T
F
S
30
66°
42°
31
73°
37°
1
68°
46°
2
68°
41°
3
73°
43°
4
77°
45°
5
78°
46°
6
75°
46°
7
67°
41°
8
66°
40°
9
69°
45°
10
72°
46°
11
72°
47°
12
65°
43°
13
68°
44°
14
67°
40°
15
69°
35°
16
74°
41°
17
73°
36°
18
68°
36°
19
60°
31°
20
59°
30°
21
61°
35°
22
65°
37°
23
70°
39°
24
65°
28°
25
56°
26°
26
56°
29°
27
60°
32°
28
65°
34°
29
67°
34°
30
67°
35°
1
64°
33°
2
65°
34°
3
67°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dubois
Dubois's September 2026 forecast shows daily high temperatures ranging from 56° to 78°, with overnight lows between 26° and 47°. The average high for September is 67° with an average low of 38°. 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 Dubois. See also: October | November | December.