S
M
T
W
T
F
S
29
69°
38°
30
61°
39°
1
61°
39°
2
62°
38°
3
63°
38°
4
62°
40°
5
62°
41°
6
61°
40°
7
64°
41°
8
63°
45°
9
63°
46°
10
62°
46°
11
66°
45°
12
67°
46°
13
66°
45°
14
65°
45°
15
66°
44°
16
66°
46°
17
65°
41°
18
60°
43°
19
59°
46°
20
59°
45°
21
63°
45°
22
63°
44°
23
61°
47°
24
60°
45°
25
62°
40°
26
59°
41°
27
61°
39°
28
60°
40°
29
59°
40°
30
61°
46°
31
61°
40°
1
58°
42°
2
Hist. Avg.
63°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Lompoc
Lompoc's December 2026 forecast shows daily high temperatures ranging from 58° to 69°, with overnight lows between 38° and 47°. The average high for December is 62° with an average low of 43°. 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 Lompoc. See also: January | February | March.
