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