S
M
T
W
T
F
S
30
82°
62°
31
85°
62°
1
85°
58°
2
83°
58°
3
83°
60°
4
77°
59°
5
77°
59°
6
78°
55°
7
77°
54°
8
81°
51°
9
77°
53°
10
76°
60°
11
82°
57°
12
80°
58°
13
81°
57°
14
80°
56°
15
81°
58°
16
83°
58°
17
Hist. Avg.
76°
54°
18
Hist. Avg.
76°
54°
19
Hist. Avg.
75°
53°
20
Hist. Avg.
75°
53°
21
Hist. Avg.
74°
52°
22
Hist. Avg.
74°
52°
23
Hist. Avg.
74°
52°
24
Hist. Avg.
73°
51°
25
Hist. Avg.
73°
51°
26
Hist. Avg.
72°
50°
27
Hist. Avg.
72°
50°
28
Hist. Avg.
72°
50°
29
Hist. Avg.
71°
49°
30
Hist. Avg.
71°
49°
1
Hist. Avg.
70°
48°
2
Hist. Avg.
70°
48°
3
Hist. Avg.
69°
48°
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 76° to 85°, with overnight lows between 51° and 62°. The average high for September is 80° with an average low of 58°. 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.