S
M
T
W
T
F
S
30
79°
53°
31
78°
46°
1
76°
42°
2
69°
44°
3
68°
48°
4
72°
53°
5
75°
46°
6
74°
43°
7
67°
44°
8
71°
48°
9
74°
50°
10
71°
50°
11
71°
49°
12
70°
50°
13
71°
47°
14
64°
41°
15
62°
40°
16
63°
40°
17
63°
48°
18
65°
40°
19
64°
49°
20
68°
47°
21
69°
40°
22
63°
38°
23
60°
38°
24
59°
37°
25
57°
35°
26
58°
40°
27
Hist. Avg.
61°
41°
28
Hist. Avg.
61°
40°
29
Hist. Avg.
61°
40°
30
Hist. Avg.
60°
40°
1
Hist. Avg.
60°
39°
2
Hist. Avg.
59°
39°
3
Hist. Avg.
59°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Douglas
Douglas's September 2026 forecast shows daily high temperatures ranging from 57° to 79°, with overnight lows between 35° and 53°. The average high for September is 68° with an average low of 45°. 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.
