S
M
T
W
T
F
S
29
38°
25°
30
39°
22°
1
37°
21°
2
34°
22°
3
36°
21°
4
35°
23°
5
34°
25°
6
38°
32°
7
41°
35°
8
49°
30°
9
50°
27°
10
38°
24°
11
37°
26°
12
37°
22°
13
38°
23°
14
35°
20°
15
37°
18°
16
34°
18°
17
31°
17°
18
31°
16°
19
32°
15°
20
32°
28°
21
39°
23°
22
42°
20°
23
36°
26°
24
36°
27°
25
44°
24°
26
40°
17°
27
36°
20°
28
37°
15°
29
36°
16°
30
28°
11°
31
43°
10°
1
29°
14°
2
26°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Suffern
Suffern's December 2026 forecast shows daily high temperatures ranging from 26° to 50°, with overnight lows between 10° and 35°. The average high for December is 37° with an average low of 21°. 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 Suffern. See also: January | February | March.
