S
M
T
W
T
F
S
29
52°
37°
30
55°
34°
1
53°
26°
2
51°
24°
3
41°
25°
4
42°
32°
5
47°
26°
6
44°
24°
7
40°
32°
8
47°
28°
9
48°
23°
10
41°
20°
11
37°
16°
12
34°
17°
13
34°
20°
14
36°
15°
15
35°
17°
16
32°
16°
17
34°
17°
18
38°
15°
19
35°
15°
20
33°
24°
21
36°
27°
22
38°
24°
23
36°
22°
24
34°
28°
25
46°
27°
26
46°
24°
27
42°
25°
28
Hist. Avg.
38°
21°
29
Hist. Avg.
37°
21°
30
Hist. Avg.
37°
21°
31
Hist. Avg.
37°
20°
1
Hist. Avg.
37°
20°
2
Hist. Avg.
37°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Poughkeepsie
Poughkeepsie's December 2026 forecast shows daily high temperatures ranging from 32° to 55°, with overnight lows between 15° and 37°. The average high for December is 41° with an average low of 23°. 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 Poughkeepsie. See also: January | February | March.