S
M
T
W
T
F
S
29
36°
26°
30
42°
29°
1
45°
29°
2
44°
25°
3
35°
27°
4
40°
30°
5
46°
22°
6
33°
20°
7
33°
21°
8
41°
29°
9
45°
27°
10
40°
28°
11
43°
30°
12
44°
28°
13
39°
24°
14
36°
15°
15
30°
14°
16
29°
17°
17
34°
24°
18
38°
26°
19
42°
26°
20
39°
25°
21
43°
26°
22
41°
24°
23
35°
22°
24
39°
27°
25
29°
10°
26
28°
14°
27
28°
13°
28
30°
22°
29
36°
23°
30
41°
20°
31
36°
22°
1
34°
20°
2
39°
14°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Dunbarton
Dunbarton's December 2026 forecast shows daily high temperatures ranging from 28° to 46°, with overnight lows between 10° and 30°. The average high for December is 38° with an average low of 23°. 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 Dunbarton. See also: January | February | March.
