S
M
T
W
T
F
S
29
45°
31°
30
47°
35°
1
50°
34°
2
48°
34°
3
50°
33°
4
46°
31°
5
48°
30°
6
46°
32°
7
48°
31°
8
40°
28°
9
38°
27°
10
38°
25°
11
36°
30°
12
38°
27°
13
39°
27°
14
37°
22°
15
36°
22°
16
38°
24°
17
37°
25°
18
36°
29°
19
42°
27°
20
42°
20°
21
36°
21°
22
33°
22°
23
32°
21°
24
36°
22°
25
36°
21°
26
40°
14°
27
33°
12°
28
28°
13°
29
30°
9°
30
30°
20°
31
33°
25°
1
44°
17°
2
41°
14°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Wallkill
Wallkill's December 2026 forecast shows daily high temperatures ranging from 28° to 50°, with overnight lows between 9° and 35°. The average high for December is 39° with an average low of 24°. 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 Wallkill. See also: January | February | March.
