S
M
T
W
T
F
S
26
67°
40°
27
75°
39°
28
63°
45°
29
59°
44°
30
51°
33°
1
48°
32°
2
47°
29°
3
47°
32°
4
53°
41°
5
55°
45°
6
56°
42°
7
55°
41°
8
53°
40°
9
52°
42°
10
55°
40°
11
54°
38°
12
58°
41°
13
59°
39°
14
58°
36°
15
57°
36°
16
57°
37°
17
58°
36°
18
58°
38°
19
64°
43°
20
61°
39°
21
60°
38°
22
61°
39°
23
60°
38°
24
61°
41°
25
64°
47°
26
67°
42°
27
61°
40°
28
62°
40°
29
64°
46°
30
71°
49°
31
71°
46°
1
70°
49°
2
73°
51°
3
74°
52°
4
74°
50°
5
72°
45°
6
65°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Windham Mountain
Windham Mountain's May 2026 forecast shows daily high temperatures ranging from 47° to 74°, with overnight lows between 29° and 52°. The average high for May is 60° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Windham Mountain. See also: June | July | August.