S
M
T
W
T
F
S
29
41°
27°
30
50°
22°
1
50°
19°
2
47°
28°
3
48°
20°
4
49°
18°
5
37°
17°
6
35°
17°
7
35°
20°
8
36°
23°
9
39°
27°
10
43°
27°
11
46°
23°
12
44°
21°
13
37°
22°
14
37°
18°
15
38°
14°
16
33°
12°
17
31°
13°
18
30°
23°
19
38°
21°
20
38°
17°
21
43°
17°
22
32°
26°
23
43°
27°
24
43°
23°
25
42°
22°
26
42°
22°
27
38°
23°
28
41°
24°
29
41°
24°
30
40°
26°
31
43°
24°
1
44°
21°
2
42°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Windham
Windham's December 2026 forecast shows daily high temperatures ranging from 30° to 50°, with overnight lows between 12° and 28°. The average high for December is 40° with an average low of 21°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Windham. See also: January | February | March.
