S
M
T
W
T
F
S
29
30°
18°
30
32°
20°
1
34°
22°
2
37°
23°
3
38°
22°
4
38°
22°
5
37°
21°
6
38°
21°
7
39°
20°
8
37°
21°
9
37°
20°
10
36°
19°
11
32°
13°
12
29°
11°
13
29°
10°
14
30°
15°
15
32°
13°
16
31°
15°
17
36°
16°
18
34°
16°
19
34°
14°
20
35°
14°
21
34°
15°
22
34°
13°
23
35°
7°
24
33°
1°
25
23°
10°
26
24°
11°
27
24°
12°
28
27°
8°
29
32°
9°
30
29°
11°
31
30°
12°
1
31°
1°
2
31°
-3°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Long Beach
Long Beach's December 2026 forecast shows daily high temperatures ranging from 23° to 39°, with overnight lows between -3° and 23°. The average high for December is 33° with an average low of 14°. 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 Long Beach. See also: January | February | March.
