S
M
T
W
T
F
S
26
75°
53°
27
79°
41°
28
84°
45°
29
80°
52°
30
79°
53°
1
80°
48°
2
81°
49°
3
84°
59°
4
79°
62°
5
73°
50°
6
78°
47°
7
78°
50°
8
88°
54°
9
93°
56°
10
97°
60°
11
101°
64°
12
93°
62°
13
90°
56°
14
92°
55°
15
97°
55°
16
96°
58°
17
94°
55°
18
93°
56°
19
97°
55°
20
82°
49°
21
83°
48°
22
82°
49°
23
83°
50°
24
85°
52°
25
90°
57°
26
91°
56°
27
87°
54°
28
86°
53°
29
88°
56°
30
87°
59°
31
87°
59°
1
88°
56°
2
88°
58°
3
90°
61°
4
89°
59°
5
89°
57°
6
88°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rio Rico
Rio Rico's May 2026 forecast shows daily high temperatures ranging from 78° to 101°, with overnight lows between 47° and 64°. The average high for May is 89° with an average low of 55°. 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 Rico. See also: June | July | August.