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