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