S
M
T
W
T
F
S
29
42°
29°
30
42°
32°
1
45°
31°
2
44°
31°
3
45°
29°
4
43°
27°
5
42°
28°
6
42°
29°
7
43°
27°
8
35°
26°
9
34°
27°
10
34°
26°
11
35°
27°
12
34°
24°
13
34°
22°
14
34°
18°
15
32°
18°
16
33°
17°
17
32°
19°
18
31°
24°
19
33°
23°
20
37°
19°
21
33°
19°
22
31°
18°
23
29°
11°
24
32°
17°
25
27°
15°
26
30°
9°
27
27°
6°
28
23°
8°
29
26°
3°
30
24°
10°
31
26°
20°
1
38°
14°
2
36°
10°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Berne
Berne's December 2026 forecast shows daily high temperatures ranging from 23° to 45°, with overnight lows between 3° and 32°. The average high for December is 35° with an average low of 20°. 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 Berne. See also: January | February | March.
