S
M
T
W
T
F
S
29
65°
48°
30
65°
49°
1
64°
55°
2
69°
52°
3
71°
45°
4
70°
44°
5
60°
45°
6
60°
52°
7
66°
53°
8
67°
52°
9
60°
42°
10
67°
48°
11
67°
52°
12
Hist. Avg.
65°
48°
13
Hist. Avg.
65°
48°
14
Hist. Avg.
65°
47°
15
Hist. Avg.
64°
47°
16
Hist. Avg.
64°
47°
17
Hist. Avg.
64°
47°
18
Hist. Avg.
64°
47°
19
Hist. Avg.
64°
47°
20
Hist. Avg.
64°
47°
21
Hist. Avg.
64°
47°
22
Hist. Avg.
64°
46°
23
Hist. Avg.
63°
46°
24
Hist. Avg.
63°
46°
25
Hist. Avg.
63°
46°
26
Hist. Avg.
63°
46°
27
Hist. Avg.
63°
46°
28
Hist. Avg.
63°
46°
29
Hist. Avg.
63°
46°
30
Hist. Avg.
63°
46°
31
Hist. Avg.
63°
46°
1
Hist. Avg.
0°
0°
2
Hist. Avg.
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Brunswick
Brunswick's December 2026 forecast shows daily high temperatures ranging from 60° to 71°, with overnight lows between 42° and 55°. The average high for December is 65° with an average low of 49°. 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.