S
M
T
W
T
F
S
29
40°
29°
30
41°
27°
1
38°
26°
2
39°
22°
3
37°
22°
4
34°
29°
5
40°
34°
6
44°
38°
7
49°
30°
8
51°
27°
9
46°
24°
10
35°
26°
11
37°
24°
12
38°
24°
13
36°
26°
14
35°
24°
15
33°
21°
16
33°
25°
17
34°
28°
18
36°
29°
19
35°
32°
20
44°
30°
21
47°
23°
22
45°
26°
23
36°
30°
24
43°
28°
25
44°
27°
26
41°
27°
27
37°
16°
28
36°
17°
29
28°
11°
30
29°
10°
31
28°
12°
1
23°
14°
2
28°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Mendon
Mendon's December 2026 forecast shows daily high temperatures ranging from 23° to 51°, with overnight lows between 10° and 38°. The average high for December is 38° 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 Mendon. See also: January | February | March.
