S
M
T
W
T
F
S
30
23°
9°
1
30°
1°
2
42°
20°
3
31°
9°
4
39°
15°
5
36°
21°
6
46°
21°
7
41°
25°
8
48°
25°
9
58°
29°
10
56°
24°
11
59°
36°
12
59°
34°
13
54°
31°
14
49°
23°
15
54°
26°
16
62°
35°
17
58°
30°
18
38°
27°
19
55°
27°
20
42°
19°
21
55°
20°
22
59°
38°
23
57°
30°
24
64°
29°
25
55°
36°
26
48°
30°
27
45°
17°
28
25°
6°
29
31°
5°
30
36°
11°
31
42°
14°
1
41°
23°
2
51°
31°
3
49°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Riverton
Riverton's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Riverton. See also: January | February | March.
