S
M
T
W
T
F
S
26
63°
38°
27
71°
33°
28
70°
36°
29
67°
42°
30
56°
47°
1
63°
37°
2
56°
46°
3
55°
34°
4
70°
32°
5
79°
43°
6
70°
54°
7
62°
38°
8
62°
36°
9
63°
40°
10
70°
51°
11
61°
39°
12
64°
37°
13
66°
41°
14
60°
49°
15
63°
46°
16
76°
43°
17
88°
52°
18
88°
56°
19
92°
66°
20
93°
53°
21
68°
43°
22
68°
46°
23
58°
49°
24
60°
48°
25
64°
51°
26
70°
54°
27
73°
53°
28
74°
54°
29
72°
53°
30
76°
52°
31
78°
53°
1
75°
54°
2
69°
52°
3
68°
52°
4
69°
56°
5
71°
56°
6
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Windham
Windham's May 2026 forecast shows daily high temperatures ranging from 58° to 93°, with overnight lows between 43° and 66°. The average high for May is 72° with an average low of 53°. 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. See also: June | July | August.