S
M
T
W
T
F
S
26
61°
41°
27
70°
35°
28
62°
38°
29
61°
48°
30
59°
46°
1
63°
35°
2
57°
43°
3
60°
40°
4
72°
35°
5
82°
61°
6
68°
43°
7
62°
40°
8
62°
43°
9
64°
47°
10
72°
46°
11
61°
37°
12
60°
37°
13
62°
46°
14
70°
49°
15
69°
50°
16
71°
49°
17
70°
46°
18
67°
47°
19
74°
50°
20
74°
52°
21
73°
50°
22
72°
45°
23
65°
43°
24
66°
45°
25
67°
45°
26
68°
46°
27
68°
45°
28
69°
46°
29
68°
45°
30
68°
46°
31
69°
55°
1
73°
52°
2
70°
48°
3
70°
52°
4
74°
55°
5
73°
51°
6
74°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Riverton
Riverton's May 2026 forecast shows daily high temperatures ranging from 60° to 82°, with overnight lows between 37° and 61°. The average high for May is 69° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Riverton. See also: June | July | August.
