S
M
T
W
T
F
S
26
83°
41°
27
75°
46°
28
70°
38°
29
69°
34°
30
64°
45°
1
62°
44°
2
75°
43°
3
87°
48°
4
87°
52°
5
64°
41°
6
45°
37°
7
79°
35°
8
81°
51°
9
91°
48°
10
70°
47°
11
84°
45°
12
93°
53°
13
90°
51°
14
100°
58°
15
91°
55°
16
97°
56°
17
95°
51°
18
85°
40°
19
71°
47°
20
76°
49°
21
79°
55°
22
86°
55°
23
85°
54°
24
82°
52°
25
84°
56°
26
86°
55°
27
84°
53°
28
82°
52°
29
81°
57°
30
84°
59°
31
84°
58°
1
81°
58°
2
82°
60°
3
88°
61°
4
89°
61°
5
89°
60°
6
88°
61°
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 71° to 97°, with overnight lows between 40° and 61°. The average high for May is 85° 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 Keyes. See also: June | July | August.