S
M
T
W
T
F
S
29
38°
29°
30
39°
29°
1
41°
35°
2
39°
38°
3
42°
35°
4
40°
35°
5
45°
29°
6
35°
29°
7
43°
35°
8
45°
40°
9
48°
40°
10
46°
34°
11
44°
36°
12
43°
35°
13
43°
32°
14
42°
33°
15
41°
35°
16
41°
33°
17
40°
31°
18
40°
33°
19
37°
34°
20
38°
37°
21
41°
35°
22
42°
33°
23
40°
33°
24
41°
34°
25
42°
37°
26
41°
33°
27
42°
30°
28
40°
34°
29
40°
35°
30
39°
35°
31
40°
36°
1
41°
36°
2
42°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Mainhardt
Mainhardt's December 2026 forecast shows daily high temperatures ranging from 35° to 48°, with overnight lows between 29° and 40°. The average high for December is 41° with an average low of 34°. 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 Mainhardt. See also: January | February | March.
