S
M
T
W
T
F
S
29
63°
43°
30
66°
34°
1
52°
29°
2
51°
30°
3
55°
39°
4
61°
38°
5
52°
35°
6
51°
33°
7
51°
28°
8
48°
27°
9
49°
28°
10
51°
34°
11
54°
31°
12
60°
37°
13
55°
37°
14
54°
28°
15
52°
29°
16
50°
30°
17
53°
26°
18
49°
25°
19
50°
24°
20
49°
27°
21
51°
30°
22
50°
27°
23
50°
26°
24
51°
26°
25
50°
29°
26
51°
33°
27
58°
30°
28
52°
26°
29
50°
26°
30
49°
23°
31
50°
24°
1
49°
26°
2
51°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Forsan
Forsan's December 2026 forecast shows daily high temperatures ranging from 48° to 66°, with overnight lows between 23° and 43°. The average high for December is 53° with an average low of 30°. 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 Forsan. See also: January | February | March.
