S
M
T
W
T
F
S
29
39°
25°
30
43°
20°
1
42°
19°
2
31°
25°
3
37°
26°
4
39°
26°
5
39°
27°
6
41°
27°
7
41°
26°
8
43°
28°
9
42°
27°
10
42°
25°
11
40°
16°
12
39°
14°
13
29°
13°
14
26°
12°
15
25°
13°
16
29°
11°
17
25°
8°
18
24°
8°
19
22°
12°
20
23°
16°
21
29°
18°
22
30°
22°
23
34°
18°
24
36°
10°
25
36°
4°
26
23°
3°
27
23°
13°
28
22°
8°
29
33°
5°
30
26°
3°
31
18°
7°
1
20°
14°
2
27°
3°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Livermore
Livermore's December 2026 forecast shows daily high temperatures ranging from 18° to 43°, with overnight lows between 3° and 28°. The average high for December is 32° with an average low of 16°. 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 Livermore. See also: January | February | March.
