S
M
T
W
T
F
S
26
33°
20°
27
46°
19°
28
53°
24°
29
63°
30°
30
74°
32°
1
67°
48°
2
72°
35°
3
64°
46°
4
55°
33°
5
54°
27°
6
68°
45°
7
71°
44°
8
63°
43°
9
63°
46°
10
73°
47°
11
66°
44°
12
65°
42°
13
61°
44°
14
64°
43°
15
68°
44°
16
60°
43°
17
63°
44°
18
64°
46°
19
60°
50°
20
65°
48°
21
64°
49°
22
66°
48°
23
68°
49°
24
69°
50°
25
70°
51°
26
71°
50°
27
66°
50°
28
65°
49°
29
69°
50°
30
62°
50°
31
69°
49°
1
71°
49°
2
61°
47°
3
62°
45°
4
61°
43°
5
62°
49°
6
63°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in River Valley Riverside
River Valley Riverside's May 2026 forecast shows daily high temperatures ranging from 60° to 73°, with overnight lows between 42° and 51°. The average high for May is 65° 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 River Valley Riverside. See also: June | July | August.
