S
M
T
W
T
F
S
26
60°
49°
27
70°
46°
28
75°
47°
29
81°
52°
30
85°
53°
1
85°
55°
2
77°
56°
3
72°
53°
4
66°
52°
5
69°
53°
6
80°
56°
7
86°
52°
8
86°
57°
9
91°
60°
10
96°
62°
11
99°
66°
12
98°
63°
13
100°
64°
14
95°
60°
15
90°
59°
16
82°
54°
17
86°
59°
18
86°
58°
19
85°
59°
20
87°
59°
21
87°
58°
22
86°
58°
23
87°
59°
24
88°
60°
25
88°
59°
26
87°
59°
27
87°
58°
28
84°
58°
29
83°
59°
30
83°
59°
31
84°
60°
1
86°
60°
2
88°
61°
3
88°
61°
4
86°
60°
5
87°
60°
6
82°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Keyes
Keyes's May 2026 forecast shows daily high temperatures ranging from 66° to 100°, with overnight lows between 52° and 66°. The average high for May is 86° with an average low of 59°. 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 Keyes. See also: June | July | August.