S
M
T
W
T
F
S
29
37°
25°
30
42°
21°
1
39°
17°
2
36°
19°
3
35°
17°
4
37°
15°
5
32°
20°
6
36°
29°
7
40°
32°
8
47°
30°
9
49°
27°
10
46°
26°
11
41°
25°
12
38°
22°
13
39°
23°
14
35°
26°
15
35°
23°
16
38°
24°
17
35°
18°
18
35°
15°
19
31°
14°
20
33°
26°
21
38°
24°
22
41°
14°
23
38°
18°
24
31°
26°
25
42°
20°
26
41°
12°
27
37°
16°
28
29°
9°
29
35°
10°
30
27°
10°
31
41°
11°
1
37°
12°
2
32°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Fremont
Fremont's December 2026 forecast shows daily high temperatures ranging from 27° to 49°, with overnight lows between 9° and 32°. The average high for December is 37° with an average low of 20°. 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 Fremont. See also: January | February | March.