S
M
T
W
T
F
S
29
42°
14°
30
43°
18°
1
41°
13°
2
39°
11°
3
38°
13°
4
40°
13°
5
40°
12°
6
39°
9°
7
37°
12°
8
38°
9°
9
38°
9°
10
39°
8°
11
35°
10°
12
37°
12°
13
40°
15°
14
41°
14°
15
40°
11°
16
39°
19°
17
42°
22°
18
45°
15°
19
43°
18°
20
40°
16°
21
43°
18°
22
45°
16°
23
39°
16°
24
38°
22°
25
42°
24°
26
44°
20°
27
46°
24°
28
48°
16°
29
44°
11°
30
39°
11°
31
39°
10°
1
Hist. Avg.
44°
18°
2
Hist. Avg.
44°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Brighton
Brighton's December 2026 forecast shows daily high temperatures ranging from 35° to 48°, with overnight lows between 8° and 24°. The average high for December is 41° with an average low of 15°. 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 Brighton. See also: January | February | March.
