S
M
T
W
T
F
S
29
44°
33°
30
46°
33°
1
47°
32°
2
42°
31°
3
43°
33°
4
47°
33°
5
46°
32°
6
48°
29°
7
39°
30°
8
42°
22°
9
38°
19°
10
33°
20°
11
33°
23°
12
35°
24°
13
35°
23°
14
36°
23°
15
40°
28°
16
43°
30°
17
45°
28°
18
39°
27°
19
36°
26°
20
38°
27°
21
32°
14°
22
30°
21°
23
37°
20°
24
36°
14°
25
30°
9°
26
28°
8°
27
25°
13°
28
28°
10°
29
29°
18°
30
33°
14°
31
43°
12°
1
30°
10°
2
27°
13°
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 25° to 48°, with overnight lows between 8° and 33°. The average high for December is 37° with an average low of 22°. 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.
