S
M
T
W
T
F
S
27
41°
24°
28
41°
21°
29
40°
20°
30
38°
16°
31
38°
13°
1
34°
13°
2
33°
24°
3
38°
26°
4
40°
26°
5
44°
24°
6
41°
15°
7
39°
12°
8
34°
18°
9
36°
16°
10
41°
16°
11
44°
11°
12
35°
11°
13
31°
12°
14
41°
12°
15
33°
16°
16
42°
14°
17
41°
12°
18
32°
11°
19
35°
19°
20
42°
25°
21
45°
26°
22
41°
25°
23
41°
22°
24
40°
19°
25
39°
20°
26
42°
21°
27
43°
19°
28
42°
21°
29
41°
24°
30
41°
19°
31
36°
19°
1
51°
25°
2
Hist. Avg.
43°
22°
3
Hist. Avg.
43°
22°
4
Hist. Avg.
43°
22°
5
Hist. Avg.
44°
22°
6
Hist. Avg.
44°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Rock
Rock's January 2027 forecast shows daily high temperatures ranging from 31° to 51°, with overnight lows between 11° and 26°. The average high for January is 39° with an average low of 19°. 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 Rock. See also: February | March | April.