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