S
M
T
W
T
F
S
29
41°
29°
30
41°
31°
1
51°
26°
2
47°
30°
3
42°
27°
4
53°
22°
5
51°
22°
6
37°
23°
7
38°
24°
8
39°
21°
9
38°
19°
10
36°
19°
11
33°
20°
12
33°
21°
13
35°
21°
14
35°
22°
15
34°
23°
16
35°
24°
17
35°
22°
18
36°
30°
19
38°
28°
20
40°
24°
21
38°
21°
22
34°
19°
23
34°
19°
24
33°
23°
25
33°
21°
26
34°
22°
27
32°
22°
28
33°
21°
29
31°
17°
30
33°
17°
31
36°
12°
1
Hist. Avg.
34°
16°
2
Hist. Avg.
34°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Monroe
Monroe's December 2026 forecast shows daily high temperatures ranging from 31° to 53°, with overnight lows between 12° and 31°. The average high for December is 38° with an average low of 22°. 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 Monroe. See also: January | February | March.