S
M
T
W
T
F
S
29
46°
35°
30
49°
40°
1
51°
39°
2
50°
39°
3
51°
37°
4
46°
34°
5
48°
31°
6
47°
36°
7
49°
35°
8
41°
30°
9
39°
28°
10
38°
27°
11
36°
32°
12
38°
30°
13
40°
28°
14
37°
25°
15
38°
26°
16
39°
28°
17
38°
29°
18
37°
32°
19
45°
30°
20
44°
22°
21
37°
23°
22
34°
23°
23
32°
27°
24
36°
26°
25
41°
25°
26
44°
17°
27
34°
16°
28
30°
19°
29
33°
19°
30
32°
27°
31
37°
27°
1
46°
20°
2
42°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Garrison
Garrison's December 2026 forecast shows daily high temperatures ranging from 30° to 51°, with overnight lows between 16° and 40°. The average high for December is 41° 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 Garrison. See also: January | February | March.
