S
M
T
W
T
F
S
29
38°
24°
30
40°
29°
1
44°
33°
2
42°
30°
3
44°
31°
4
47°
35°
5
48°
26°
6
36°
23°
7
36°
30°
8
44°
35°
9
44°
34°
10
42°
33°
11
45°
34°
12
46°
31°
13
38°
26°
14
36°
23°
15
32°
22°
16
32°
23°
17
35°
26°
18
40°
31°
19
45°
31°
20
43°
33°
21
44°
29°
22
35°
27°
23
36°
28°
24
43°
30°
25
31°
16°
26
32°
17°
27
31°
22°
28
32°
29°
29
45°
25°
30
44°
23°
31
34°
18°
1
34°
18°
2
33°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Exeter
Exeter's December 2026 forecast shows daily high temperatures ranging from 31° to 48°, with overnight lows between 15° and 35°. The average high for December is 39° with an average low of 27°. 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 Exeter. See also: January | February | March.
