S
M
T
W
T
F
S
30
82°
63°
31
81°
65°
1
82°
64°
2
82°
64°
3
81°
56°
4
79°
54°
5
78°
55°
6
80°
55°
7
83°
56°
8
84°
61°
9
85°
62°
10
81°
54°
11
79°
54°
12
79°
57°
13
80°
53°
14
78°
53°
15
75°
52°
16
77°
50°
17
76°
52°
18
78°
56°
19
80°
56°
20
78°
55°
21
82°
58°
22
81°
59°
23
83°
58°
24
77°
58°
25
77°
57°
26
78°
57°
27
81°
56°
28
82°
56°
29
82°
55°
30
81°
55°
1
81°
57°
2
82°
50°
3
81°
45°
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 75° to 85°, with overnight lows between 45° and 65°. The average high for September is 80° with an average low of 56°. 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.