S
M
T
W
T
F
S
27
34°
16°
28
30°
19°
29
33°
19°
30
32°
27°
31
37°
27°
1
46°
20°
2
42°
18°
3
31°
17°
4
29°
19°
5
33°
29°
6
41°
31°
7
44°
24°
8
47°
11°
9
45°
17°
10
25°
23°
11
34°
19°
12
35°
16°
13
30°
15°
14
28°
10°
15
29°
16°
16
27°
21°
17
37°
26°
18
36°
23°
19
45°
16°
20
40°
16°
21
28°
23°
22
34°
26°
23
40°
27°
24
42°
29°
25
42°
29°
26
45°
27°
27
45°
27°
28
41°
25°
29
42°
25°
30
39°
21°
31
34°
19°
1
42°
13°
2
42°
11°
3
Hist. Avg.
35°
15°
4
Hist. Avg.
35°
15°
5
Hist. Avg.
35°
15°
6
Hist. Avg.
36°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Garrison
Garrison's January 2027 forecast shows daily high temperatures ranging from 25° to 47°, with overnight lows between 10° and 31°. The average high for January is 37° with an average low of 21°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Garrison. See also: February | March | April.