S
M
T
W
T
F
S
29
58°
47°
30
57°
46°
1
58°
46°
2
57°
45°
3
57°
46°
4
61°
46°
5
58°
45°
6
59°
42°
7
59°
45°
8
58°
45°
9
55°
44°
10
54°
43°
11
53°
36°
12
56°
36°
13
53°
41°
14
60°
43°
15
62°
45°
16
60°
44°
17
60°
37°
18
52°
43°
19
51°
45°
20
54°
42°
21
56°
35°
22
56°
33°
23
49°
35°
24
50°
39°
25
54°
42°
26
51°
40°
27
50°
37°
28
49°
34°
29
49°
34°
30
48°
32°
31
48°
33°
1
49°
34°
2
49°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Folsom
Folsom's December 2026 forecast shows daily high temperatures ranging from 48° to 62°, with overnight lows between 32° and 47°. The average high for December is 55° with an average low of 40°. 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 Folsom. See also: January | February | March.
