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