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