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