S
M
T
W
T
F
S
30
76°
60°
31
77°
59°
1
71°
64°
2
70°
64°
3
83°
64°
4
83°
60°
5
76°
59°
6
73°
52°
7
80°
49°
8
79°
52°
9
77°
59°
10
82°
65°
11
75°
52°
12
77°
48°
13
76°
62°
14
71°
50°
15
71°
45°
16
76°
62°
17
72°
57°
18
72°
43°
19
63°
50°
20
59°
48°
21
60°
46°
22
58°
46°
23
58°
47°
24
61°
50°
25
64°
49°
26
66°
48°
27
66°
50°
28
64°
48°
29
66°
41°
30
61°
40°
1
60°
41°
2
66°
45°
3
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Windham Town
Windham Town's September 2026 forecast shows daily high temperatures ranging from 58° to 76°, with overnight lows between 40° and 62°. The average high for September is 64° with an average low of 48°. 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 Windham Town. See also: October | November | December.