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