S
M
T
W
T
F
S
29
48°
40°
30
52°
43°
1
53°
42°
2
51°
42°
3
53°
40°
4
49°
39°
5
51°
37°
6
49°
40°
7
52°
39°
8
44°
36°
9
42°
33°
10
42°
31°
11
40°
36°
12
41°
35°
13
44°
32°
14
40°
29°
15
39°
30°
16
39°
30°
17
40°
31°
18
38°
36°
19
48°
35°
20
47°
26°
21
41°
27°
22
36°
27°
23
35°
29°
24
39°
30°
25
42°
27°
26
46°
22°
27
36°
22°
28
31°
23°
29
35°
22°
30
35°
29°
31
37°
31°
1
48°
24°
2
45°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cold Spring Harbor
Cold Spring Harbor's December 2026 forecast shows daily high temperatures ranging from 31° to 53°, with overnight lows between 20° and 43°. The average high for December is 43° with an average low of 32°. 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 Cold Spring Harbor. See also: January | February | March.
