S
M
T
W
T
F
S
29
34°
29°
30
37°
29°
1
41°
26°
2
40°
24°
3
35°
20°
4
29°
21°
5
29°
24°
6
32°
22°
7
33°
22°
8
29°
23°
9
32°
19°
10
33°
16°
11
24°
10°
12
20°
9°
13
18°
8°
14
18°
6°
15
15°
10°
16
18°
12°
17
19°
18°
18
27°
3°
19
32°
1°
20
19°
4°
21
14°
5°
22
15°
6°
23
16°
-1°
24
15°
11°
25
17°
17°
26
30°
10°
27
11°
0°
28
15°
13°
29
Hist. Avg.
22°
9°
30
Hist. Avg.
22°
9°
31
Hist. Avg.
22°
9°
1
Hist. Avg.
22°
9°
2
Hist. Avg.
22°
9°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Mont-Joli
Mont-Joli's December 2026 forecast shows daily high temperatures ranging from 11° to 41°, with overnight lows between -1° and 29°. The average high for December is 25° with an average low of 14°. 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 Mont-Joli. See also: January | February | March.