S
M
T
W
T
F
S
26
69°
53°
27
70°
46°
28
77°
47°
29
80°
51°
30
86°
52°
1
84°
55°
2
71°
55°
3
74°
55°
4
69°
54°
5
66°
53°
6
75°
55°
7
83°
54°
8
88°
51°
9
88°
57°
10
88°
56°
11
94°
54°
12
86°
57°
13
81°
58°
14
93°
57°
15
90°
62°
16
82°
62°
17
81°
62°
18
87°
54°
19
93°
57°
20
95°
59°
21
95°
57°
22
90°
55°
23
85°
53°
24
83°
54°
25
82°
55°
26
81°
56°
27
82°
56°
28
84°
55°
29
90°
57°
30
84°
54°
31
83°
54°
1
87°
57°
2
87°
58°
3
88°
59°
4
89°
59°
5
88°
58°
6
88°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rio Vista
Rio Vista's May 2026 forecast shows daily high temperatures ranging from 81° to 95°, with overnight lows between 53° and 62°. The average high for May is 87° with an average low of 57°. 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 Rio Vista. See also: June | July | August.
