S
M
T
W
T
F
S
29
44°
29°
30
41°
28°
1
38°
27°
2
31°
22°
3
34°
26°
4
38°
25°
5
36°
24°
6
31°
17°
7
27°
13°
8
26°
13°
9
30°
16°
10
34°
23°
11
35°
22°
12
38°
23°
13
34°
23°
14
28°
22°
15
35°
19°
16
36°
20°
17
34°
18°
18
31°
15°
19
30°
11°
20
26°
6°
21
23°
15°
22
28°
15°
23
33°
16°
24
30°
13°
25
31°
9°
26
28°
16°
27
26°
12°
28
29°
8°
29
25°
9°
30
25°
13°
31
26°
4°
1
29°
0°
2
19°
3°
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 19° to 44°, with overnight lows between -0° and 29°. The average high for December is 31° with an average low of 16°. 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.
