S
M
T
W
T
F
S
29
37°
24°
30
32°
20°
1
31°
21°
2
31°
22°
3
34°
22°
4
37°
23°
5
38°
22°
6
35°
21°
7
34°
26°
8
35°
26°
9
36°
23°
10
31°
19°
11
40°
23°
12
40°
23°
13
33°
22°
14
35°
21°
15
36°
11°
16
33°
13°
17
27°
20°
18
32°
15°
19
37°
8°
20
29°
20°
21
29°
22°
22
36°
21°
23
37°
23°
24
37°
24°
25
38°
15°
26
39°
14°
27
38°
11°
28
24°
12°
29
23°
19°
30
32°
20°
31
36°
19°
1
36°
22°
2
37°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Rumford
Rumford's December 2026 forecast shows daily high temperatures ranging from 23° to 40°, with overnight lows between 8° and 26°. The average high for December is 34° with an average low of 20°. 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 Rumford. See also: January | February | March.