S
M
T
W
T
F
S
29
46°
33°
30
50°
38°
1
51°
37°
2
50°
37°
3
51°
35°
4
46°
33°
5
48°
29°
6
47°
34°
7
50°
33°
8
41°
29°
9
40°
26°
10
38°
25°
11
36°
30°
12
38°
28°
13
40°
26°
14
38°
23°
15
38°
24°
16
40°
26°
17
39°
27°
18
38°
30°
19
46°
28°
20
44°
20°
21
38°
21°
22
35°
21°
23
33°
25°
24
36°
24°
25
42°
23°
26
44°
15°
27
35°
15°
28
31°
17°
29
33°
17°
30
33°
26°
31
38°
25°
1
47°
18°
2
43°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Allendale
Allendale's December 2026 forecast shows daily high temperatures ranging from 31° to 51°, with overnight lows between 15° and 38°. The average high for December is 41° with an average low of 26°. 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 Allendale. See also: January | February | March.
