S
M
T
W
T
F
S
30
96°
70°
31
86°
66°
1
90°
66°
2
92°
67°
3
89°
68°
4
86°
67°
5
93°
65°
6
99°
70°
7
97°
69°
8
94°
68°
9
96°
69°
10
90°
66°
11
91°
68°
12
86°
69°
13
94°
65°
14
87°
66°
15
87°
64°
16
83°
65°
17
88°
63°
18
91°
65°
19
92°
61°
20
90°
59°
21
90°
89°
22
78°
65°
23
82°
61°
24
85°
58°
25
88°
56°
26
90°
54°
27
88°
62°
28
75°
61°
29
72°
55°
30
75°
54°
1
81°
58°
2
81°
58°
3
78°
59°
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 72° to 81°, with overnight lows between 54° and 59°. The average high for September is 77° with an average low of 57°. 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.
