S
M
T
W
T
F
S
26
41°
26°
27
43°
26°
28
56°
30°
29
55°
29°
30
55°
34°
1
64°
34°
2
72°
35°
3
74°
38°
4
65°
38°
5
46°
30°
6
57°
25°
7
72°
45°
8
71°
38°
9
61°
39°
10
75°
34°
11
86°
49°
12
80°
52°
13
91°
46°
14
80°
47°
15
81°
43°
16
74°
45°
17
56°
34°
18
44°
33°
19
55°
35°
20
61°
40°
21
69°
44°
22
77°
49°
23
75°
47°
24
74°
48°
25
74°
47°
26
79°
50°
27
72°
44°
28
65°
39°
29
66°
42°
30
69°
46°
31
72°
46°
1
77°
50°
2
78°
51°
3
79°
51°
4
80°
52°
5
78°
48°
6
75°
51°
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 44° to 81°, with overnight lows between 33° and 52°. The average high for May is 71° with an average low of 45°. 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.
