S
M
T
W
T
F
S
29
39°
28°
30
40°
27°
1
39°
28°
2
40°
22°
3
39°
22°
4
35°
28°
5
38°
32°
6
42°
38°
7
49°
31°
8
52°
28°
9
49°
25°
10
36°
24°
11
37°
23°
12
38°
25°
13
36°
26°
14
37°
24°
15
35°
21°
16
33°
23°
17
33°
25°
18
35°
27°
19
35°
31°
20
41°
30°
21
48°
24°
22
47°
25°
23
36°
31°
24
45°
29°
25
47°
28°
26
42°
27°
27
37°
17°
28
38°
16°
29
29°
13°
30
32°
10°
31
31°
12°
1
24°
14°
2
29°
19°
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 24° to 52°, with overnight lows between 10° and 38°. The average high for December is 38° with an average low of 24°. 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.