S
M
T
W
T
F
S
30
62°
58°
31
65°
57°
1
66°
57°
2
66°
56°
3
62°
58°
4
65°
58°
5
66°
54°
6
62°
57°
7
62°
56°
8
63°
54°
9
62°
54°
10
61°
55°
11
61°
52°
12
62°
54°
13
61°
52°
14
61°
56°
15
60°
54°
16
62°
53°
17
62°
54°
18
61°
53°
19
64°
52°
20
60°
53°
21
61°
54°
22
60°
52°
23
59°
51°
24
59°
52°
25
60°
54°
26
60°
55°
27
61°
52°
28
60°
51°
29
59°
49°
30
59°
49°
1
58°
50°
2
60°
54°
3
60°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Douglas
Douglas's September 2026 forecast shows daily high temperatures ranging from 58° to 66°, with overnight lows between 49° and 58°. The average high for September is 61° with an average low of 54°. 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 Douglas. See also: October | November | December.
