S
M
T
W
T
F
S
30
63°
55°
31
66°
52°
1
64°
54°
2
63°
54°
3
66°
57°
4
64°
55°
5
64°
50°
6
68°
55°
7
64°
54°
8
61°
54°
9
64°
48°
10
63°
50°
11
61°
48°
12
64°
47°
13
62°
54°
14
64°
51°
15
57°
47°
16
56°
50°
17
55°
47°
18
56°
49°
19
55°
48°
20
58°
48°
21
57°
46°
22
58°
45°
23
57°
49°
24
58°
47°
25
55°
46°
26
55°
45°
27
54°
46°
28
54°
43°
29
53°
42°
30
54°
47°
1
55°
45°
2
55°
46°
3
54°
44°
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 53° to 64°, with overnight lows between 42° and 54°. The average high for September is 57° with an average low of 47°. 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.
