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