S
M
T
W
T
F
S
30
66°
59°
31
63°
54°
1
65°
56°
2
67°
57°
3
66°
57°
4
65°
51°
5
64°
55°
6
66°
54°
7
64°
58°
8
63°
57°
9
63°
55°
10
61°
55°
11
61°
57°
12
62°
56°
13
63°
53°
14
63°
57°
15
64°
57°
16
61°
56°
17
62°
58°
18
64°
57°
19
63°
57°
20
61°
56°
21
63°
57°
22
64°
56°
23
64°
56°
24
60°
54°
25
61°
54°
26
62°
56°
27
63°
55°
28
63°
54°
29
62°
56°
30
63°
56°
1
64°
55°
2
63°
55°
3
63°
54°
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 60° to 67°, with overnight lows between 51° and 58°. The average high for September is 63° 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 Douglas. See also: October | November | December.
