S
M
T
W
T
F
S
29
39°
20°
30
37°
19°
1
37°
15°
2
38°
18°
3
38°
18°
4
36°
17°
5
37°
16°
6
42°
16°
7
39°
15°
8
41°
17°
9
43°
15°
10
34°
10°
11
33°
3°
12
31°
4°
13
33°
8°
14
38°
5°
15
36°
11°
16
42°
14°
17
42°
12°
18
37°
12°
19
38°
15°
20
37°
10°
21
37°
15°
22
40°
7°
23
37°
-2°
24
29°
1°
25
28°
5°
26
37°
11°
27
41°
8°
28
41°
8°
29
36°
14°
30
39°
15°
31
40°
7°
1
36°
0°
2
29°
2°
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 28° to 43°, with overnight lows between -2° and 20°. The average high for December is 37° with an average low of 11°. 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.