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