S
M
T
W
T
F
S
29
48°
35°
30
45°
35°
1
44°
30°
2
43°
29°
3
44°
31°
4
51°
37°
5
54°
39°
6
53°
40°
7
44°
27°
8
42°
26°
9
43°
34°
10
46°
32°
11
54°
27°
12
42°
26°
13
41°
25°
14
40°
22°
15
40°
21°
16
37°
21°
17
38°
22°
18
38°
20°
19
39°
22°
20
37°
25°
21
37°
29°
22
38°
32°
23
45°
34°
24
48°
37°
25
53°
28°
26
53°
26°
27
46°
24°
28
38°
28°
29
43°
20°
30
42°
19°
31
35°
20°
1
36°
24°
2
39°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Collingswood
Collingswood's December 2026 forecast shows daily high temperatures ranging from 35° to 54°, with overnight lows between 19° and 40°. The average high for December is 43° with an average low of 28°. 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 Collingswood. See also: January | February | March.
