S
M
T
W
T
F
S
29
47°
36°
30
49°
35°
1
44°
35°
2
43°
34°
3
40°
34°
4
41°
32°
5
40°
32°
6
40°
33°
7
41°
33°
8
37°
32°
9
39°
31°
10
42°
32°
11
43°
31°
12
37°
30°
13
35°
26°
14
31°
26°
15
32°
30°
16
35°
30°
17
41°
32°
18
43°
30°
19
40°
29°
20
38°
26°
21
32°
24°
22
34°
28°
23
38°
29°
24
39°
28°
25
29°
16°
26
29°
20°
27
32°
22°
28
34°
20°
29
32°
20°
30
33°
21°
31
32°
13°
1
29°
12°
2
26°
12°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Riverdale
Riverdale's December 2026 forecast shows daily high temperatures ranging from 26° to 49°, with overnight lows between 12° and 36°. The average high for December is 37° with an average low of 27°. 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 Riverdale. See also: January | February | March.
