S
M
T
W
T
F
S
29
51°
35°
30
50°
35°
1
49°
28°
2
37°
27°
3
41°
31°
4
49°
31°
5
47°
32°
6
37°
25°
7
34°
20°
8
33°
20°
9
33°
24°
10
40°
27°
11
41°
26°
12
45°
27°
13
41°
27°
14
34°
21°
15
39°
22°
16
39°
25°
17
38°
22°
18
34°
17°
19
33°
14°
20
31°
12°
21
29°
16°
22
30°
21°
23
35°
20°
24
33°
20°
25
32°
12°
26
32°
13°
27
29°
12°
28
30°
11°
29
28°
17°
30
29°
16°
31
29°
11°
1
33°
6°
2
27°
8°
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 27° to 51°, with overnight lows between 6° and 35°. The average high for December is 36° 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 Mendon. See also: January | February | March.
