S
M
T
W
T
F
S
29
29°
10°
30
11°
-5°
1
11°
0°
2
14°
9°
3
24°
11°
4
25°
9°
5
26°
7°
6
26°
6°
7
25°
5°
8
24°
7°
9
26°
7°
10
26°
6°
11
25°
4°
12
25°
0°
13
22°
-2°
14
16°
2°
15
17°
6°
16
25°
6°
17
25°
5°
18
24°
6°
19
24°
4°
20
23°
2°
21
23°
1°
22
19°
1°
23
18°
-1°
24
17°
-9°
25
16°
-10°
26
15°
-6°
27
9°
5°
28
23°
-5°
29
27°
-11°
30
16°
-11°
31
8°
-10°
1
8°
-4°
2
9°
-9°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Donnelly
Donnelly's December 2026 forecast shows daily high temperatures ranging from 8° to 29°, with overnight lows between -11° and 11°. The average high for December is 20° with an average low of 1°. 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 Donnelly. See also: January | February | March.
