S
M
T
W
T
F
S
29
47°
28°
30
43°
28°
1
42°
30°
2
47°
19°
3
45°
17°
4
44°
17°
5
39°
18°
6
38°
17°
7
39°
15°
8
40°
14°
9
38°
13°
10
35°
14°
11
34°
14°
12
36°
15°
13
37°
17°
14
38°
17°
15
40°
19°
16
42°
21°
17
41°
25°
18
42°
26°
19
40°
25°
20
41°
19°
21
38°
19°
22
39°
25°
23
39°
16°
24
40°
15°
25
33°
14°
26
34°
15°
27
35°
15°
28
34°
14°
29
36°
19°
30
38°
8°
31
33°
8°
1
Hist. Avg.
42°
23°
2
Hist. Avg.
42°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Hermann
Hermann's December 2026 forecast shows daily high temperatures ranging from 33° to 47°, with overnight lows between 8° and 30°. The average high for December is 39° with an average low of 18°. 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 Hermann. See also: January | February | March.
