S
M
T
W
T
F
S
29
48°
40°
30
47°
38°
1
46°
36°
2
45°
38°
3
44°
39°
4
45°
40°
5
44°
39°
6
45°
38°
7
47°
37°
8
45°
35°
9
39°
34°
10
43°
34°
11
38°
36°
12
39°
33°
13
39°
34°
14
38°
34°
15
39°
36°
16
38°
34°
17
40°
36°
18
37°
37°
19
44°
39°
20
43°
38°
21
44°
37°
22
43°
37°
23
41°
40°
24
46°
39°
25
46°
38°
26
45°
30°
27
46°
29°
28
38°
28°
29
36°
25°
30
34°
25°
31
35°
24°
1
34°
26°
2
35°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Simmern
Simmern's December 2026 forecast shows daily high temperatures ranging from 34° to 48°, with overnight lows between 24° and 40°. The average high for December is 42° with an average low of 35°. 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 Simmern. See also: January | February | March.
