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
65°
42°
15
67°
50°
16
73°
59°
17
74°
59°
18
72°
50°
19
66°
51°
20
61°
48°
21
62°
47°
22
59°
47°
23
62°
46°
24
63°
48°
25
64°
49°
26
63°
48°
27
62°
46°
28
68°
46°
29
68°
43°
30
61°
40°
1
60°
41°
2
63°
45°
3
66°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Windham Ski Area
Windham Ski Area's September 2026 forecast shows daily high temperatures ranging from 59° to 74°, with overnight lows between 40° and 59°. The average high for September is 65° with an average low of 47°. 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 Ski Area. See also: October | November | December.