S
M
T
W
T
F
S
29
55°
37°
30
54°
37°
1
53°
29°
2
39°
27°
3
43°
31°
4
52°
33°
5
50°
34°
6
40°
26°
7
38°
22°
8
36°
20°
9
36°
24°
10
42°
28°
11
44°
26°
12
47°
27°
13
44°
27°
14
38°
22°
15
40°
24°
16
39°
27°
17
40°
24°
18
37°
18°
19
36°
17°
20
35°
16°
21
33°
18°
22
34°
24°
23
38°
23°
24
36°
23°
25
35°
15°
26
34°
16°
27
34°
16°
28
35°
15°
29
33°
21°
30
33°
19°
31
34°
15°
1
35°
10°
2
32°
12°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Old Monroe
Old Monroe's December 2026 forecast shows daily high temperatures ranging from 32° to 55°, with overnight lows between 10° and 37°. The average high for December is 40° with an average low of 23°. 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 Old Monroe. See also: January | February | March.