S
M
T
W
T
F
S
29
31°
23°
30
36°
19°
1
34°
17°
2
30°
16°
3
30°
15°
4
34°
11°
5
28°
16°
6
29°
26°
7
35°
28°
8
40°
28°
9
44°
24°
10
42°
23°
11
36°
22°
12
33°
18°
13
33°
20°
14
29°
22°
15
30°
22°
16
33°
21°
17
31°
16°
18
31°
15°
19
27°
15°
20
29°
21°
21
30°
20°
22
36°
11°
23
35°
12°
24
25°
23°
25
36°
17°
26
36°
7°
27
33°
10°
28
23°
5°
29
29°
6°
30
22°
10°
31
36°
9°
1
34°
5°
2
30°
14°
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 22° to 44°, with overnight lows between 5° and 28°. The average high for December is 32° with an average low of 17°. 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.
