S
M
T
W
T
F
S
29
39°
23°
30
41°
29°
1
45°
22°
2
47°
22°
3
37°
27°
4
46°
31°
5
48°
30°
6
49°
28°
7
46°
27°
8
40°
25°
9
44°
22°
10
42°
26°
11
39°
28°
12
42°
25°
13
41°
20°
14
38°
23°
15
34°
24°
16
37°
26°
17
40°
26°
18
39°
27°
19
40°
27°
20
47°
22°
21
44°
23°
22
40°
22°
23
41°
22°
24
34°
17°
25
35°
16°
26
30°
8°
27
27°
7°
28
25°
14°
29
30°
4°
30
30°
5°
31
21°
6°
1
23°
16°
2
27°
4°
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 21° to 49°, with overnight lows between 4° and 31°. The average high for December is 38° with an average low of 21°. 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.