S
M
T
W
T
F
S
30
82°
55°
31
83°
54°
1
81°
54°
2
81°
53°
3
84°
53°
4
79°
52°
5
77°
53°
6
83°
53°
7
85°
51°
8
85°
42°
9
79°
43°
10
72°
48°
11
80°
50°
12
81°
47°
13
81°
40°
14
71°
44°
15
76°
45°
16
80°
44°
17
79°
47°
18
80°
47°
19
80°
48°
20
79°
47°
21
80°
49°
22
81°
47°
23
80°
47°
24
79°
46°
25
77°
39°
26
74°
35°
27
63°
42°
28
67°
42°
29
74°
41°
30
68°
40°
1
75°
35°
2
66°
40°
3
71°
41°
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 63° to 85°, with overnight lows between 35° and 55°. The average high for September is 78° with an average low of 46°. 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.
