S
M
T
W
T
F
S
30
32°
21°
1
34°
30°
2
32°
28°
3
35°
30°
4
34°
31°
5
39°
33°
6
49°
35°
7
47°
34°
8
53°
41°
9
53°
40°
10
58°
40°
11
55°
44°
12
50°
43°
13
56°
36°
14
54°
32°
15
58°
45°
16
52°
40°
17
52°
36°
18
52°
35°
19
49°
33°
20
44°
32°
21
39°
31°
22
45°
34°
23
41°
34°
24
50°
36°
25
46°
33°
26
39°
32°
27
35°
20°
28
29°
15°
29
35°
24°
30
38°
22°
31
37°
22°
1
32°
21°
2
35°
31°
3
49°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Fairfield
Fairfield's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Fairfield. See also: January | February | March.
