S
M
T
W
T
F
S
29
37°
23°
30
35°
24°
1
39°
24°
2
39°
23°
3
38°
22°
4
36°
23°
5
36°
23°
6
38°
21°
7
35°
18°
8
33°
20°
9
33°
21°
10
34°
15°
11
36°
15°
12
31°
19°
13
33°
18°
14
Hist. Avg.
31°
17°
15
Hist. Avg.
31°
16°
16
Hist. Avg.
31°
16°
17
Hist. Avg.
30°
16°
18
Hist. Avg.
30°
16°
19
Hist. Avg.
30°
15°
20
Hist. Avg.
30°
15°
21
Hist. Avg.
30°
15°
22
Hist. Avg.
29°
14°
23
Hist. Avg.
29°
14°
24
Hist. Avg.
29°
14°
25
Hist. Avg.
29°
14°
26
Hist. Avg.
29°
13°
27
Hist. Avg.
28°
13°
28
Hist. Avg.
28°
13°
29
Hist. Avg.
28°
12°
30
Hist. Avg.
28°
12°
31
Hist. Avg.
28°
12°
1
Hist. Avg.
28°
12°
2
Hist. Avg.
27°
11°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Rock
Rock's December 2026 forecast shows daily high temperatures ranging from 31° to 39°, with overnight lows between 15° and 24°. The average high for December is 36° 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 December weather will actually feel in Rock. See also: January | February | March.