S
M
T
W
T
F
S
29
45°
35°
30
43°
32°
1
43°
36°
2
45°
36°
3
47°
21°
4
48°
19°
5
33°
20°
6
31°
21°
7
33°
22°
8
32°
18°
9
33°
17°
10
29°
17°
11
27°
20°
12
32°
19°
13
31°
20°
14
31°
24°
15
34°
25°
16
36°
25°
17
35°
26°
18
38°
31°
19
40°
30°
20
39°
30°
21
37°
28°
22
37°
27°
23
35°
28°
24
36°
24°
25
37°
26°
26
35°
25°
27
35°
20°
28
34°
19°
29
32°
24°
30
33°
18°
31
35°
23°
1
32°
22°
2
Hist. Avg.
32°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Windsor
Windsor's December 2026 forecast shows daily high temperatures ranging from 27° to 48°, with overnight lows between 17° and 36°. The average high for December is 36° with an average low of 24°. 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 Windsor. See also: January | February | March.
