S
M
T
W
T
F
S
30
81°
69°
31
91°
72°
1
94°
77°
2
96°
78°
3
92°
79°
4
93°
78°
5
83°
73°
6
79°
71°
7
77°
67°
8
84°
73°
9
79°
66°
10
77°
63°
11
81°
65°
12
81°
69°
13
78°
66°
14
74°
65°
15
72°
62°
16
73°
64°
17
74°
63°
18
72°
64°
19
74°
60°
20
72°
59°
21
72°
64°
22
67°
63°
23
70°
63°
24
75°
62°
25
75°
63°
26
74°
63°
27
74°
62°
28
76°
64°
29
75°
64°
30
75°
63°
1
73°
57°
2
68°
52°
3
60°
48°
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 60° to 84°, with overnight lows between 48° and 73°. The average high for September is 74° with an average low of 63°. 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.
