S
M
T
W
T
F
S
26
86°
73°
27
91°
73°
28
89°
77°
29
91°
71°
30
76°
65°
1
71°
60°
2
75°
57°
3
81°
62°
4
88°
70°
5
89°
74°
6
89°
62°
7
84°
64°
8
84°
68°
9
89°
67°
10
90°
71°
11
91°
71°
12
92°
73°
13
97°
72°
14
97°
72°
15
98°
73°
16
85°
68°
17
87°
69°
18
86°
68°
19
88°
70°
20
90°
73°
21
88°
72°
22
87°
66°
23
86°
66°
24
90°
71°
25
94°
71°
26
88°
67°
27
88°
67°
28
89°
70°
29
87°
70°
30
90°
74°
31
89°
73°
1
89°
73°
2
90°
74°
3
90°
76°
4
91°
76°
5
91°
75°
6
95°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Del Rio
Del Rio's May 2026 forecast shows daily high temperatures ranging from 75° to 98°, with overnight lows between 57° and 76°. The average high for May is 89° with an average low of 70°. 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 Del Rio. See also: June | July | August.