S
M
T
W
T
F
S
30
81°
56°
31
82°
52°
1
79°
50°
2
86°
50°
3
74°
59°
4
91°
60°
5
85°
67°
6
84°
66°
7
82°
55°
8
72°
52°
9
72°
48°
10
84°
51°
11
70°
48°
12
62°
41°
13
60°
41°
14
61°
43°
15
67°
46°
16
70°
50°
17
70°
49°
18
67°
45°
19
69°
43°
20
62°
49°
21
68°
51°
22
73°
50°
23
65°
49°
24
62°
48°
25
71°
49°
26
71°
49°
27
70°
48°
28
70°
47°
29
59°
45°
30
56°
39°
1
56°
40°
2
55°
38°
3
55°
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 55° to 84°, with overnight lows between 38° and 66°. The average high for September is 67° 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.
