S
M
T
W
T
F
S
29
36°
25°
30
40°
22°
1
38°
20°
2
34°
18°
3
35°
18°
4
38°
14°
5
33°
18°
6
34°
28°
7
39°
30°
8
45°
30°
9
48°
27°
10
47°
26°
11
41°
25°
12
38°
21°
13
37°
23°
14
34°
25°
15
35°
25°
16
37°
24°
17
36°
20°
18
36°
18°
19
31°
18°
20
34°
24°
21
35°
23°
22
40°
14°
23
39°
16°
24
30°
26°
25
41°
20°
26
41°
10°
27
37°
14°
28
28°
9°
29
34°
10°
30
27°
14°
31
40°
13°
1
39°
9°
2
34°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Brunswick
Brunswick's December 2026 forecast shows daily high temperatures ranging from 27° to 48°, with overnight lows between 9° and 30°. The average high for December is 37° with an average low of 20°. 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 Brunswick. See also: January | February | March.
