S
M
T
W
T
F
S
29
54°
38°
30
55°
34°
1
47°
34°
2
57°
37°
3
54°
32°
4
46°
27°
5
47°
32°
6
44°
36°
7
44°
35°
8
45°
36°
9
51°
36°
10
52°
35°
11
41°
30°
12
43°
33°
13
49°
26°
14
42°
34°
15
50°
30°
16
46°
34°
17
52°
35°
18
53°
34°
19
50°
33°
20
42°
28°
21
40°
30°
22
52°
33°
23
52°
30°
24
38°
26°
25
37°
20°
26
39°
24°
27
41°
25°
28
40°
21°
29
39°
21°
30
40°
19°
31
40°
17°
1
36°
22°
2
37°
20°
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 36° to 57°, with overnight lows between 17° and 38°. The average high for December is 46° with an average low of 30°. 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.
