S
M
T
W
T
F
S
29
37°
15°
30
37°
7°
1
33°
5°
2
34°
8°
3
38°
8°
4
35°
7°
5
33°
5°
6
33°
5°
7
31°
3°
8
31°
5°
9
35°
8°
10
40°
6°
11
39°
10°
12
42°
15°
13
40°
12°
14
36°
10°
15
35°
13°
16
35°
5°
17
31°
0°
18
30°
2°
19
31°
3°
20
30°
9°
21
33°
7°
22
32°
1°
23
31°
8°
24
33°
5°
25
31°
9°
26
33°
11°
27
38°
12°
28
37°
8°
29
30°
6°
30
32°
-1°
31
29°
3°
1
30°
6°
2
37°
10°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in San Cristobal
San Cristobal's December 2026 forecast shows daily high temperatures ranging from 29° to 42°, with overnight lows between -1° and 15°. The average high for December is 34° with an average low of 7°. 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 San Cristobal. See also: January | February | March.