S
M
T
W
T
F
S
30
85°
61°
31
83°
59°
1
78°
62°
2
79°
64°
3
83°
59°
4
83°
65°
5
84°
65°
6
85°
58°
7
83°
58°
8
77°
57°
9
76°
57°
10
80°
61°
11
81°
59°
12
81°
58°
13
75°
56°
14
74°
62°
15
79°
61°
16
81°
55°
17
80°
54°
18
72°
52°
19
71°
54°
20
72°
59°
21
71°
59°
22
73°
53°
23
71°
56°
24
70°
55°
25
71°
58°
26
74°
58°
27
76°
56°
28
76°
50°
29
69°
56°
30
70°
56°
1
69°
57°
2
73°
55°
3
72°
49°
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 69° to 85°, with overnight lows between 49° and 65°. The average high for September is 76° with an average low of 58°. 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.