S
M
T
W
T
F
S
26
88°
72°
27
90°
73°
28
90°
74°
29
83°
68°
30
69°
62°
1
62°
50°
2
75°
49°
3
79°
46°
4
81°
50°
5
79°
63°
6
80°
61°
7
74°
56°
8
72°
60°
9
75°
64°
10
86°
66°
11
75°
64°
12
84°
60°
13
88°
56°
14
90°
60°
15
89°
66°
16
88°
66°
17
89°
71°
18
87°
75°
19
88°
65°
20
81°
65°
21
79°
69°
22
88°
69°
23
77°
69°
24
75°
66°
25
80°
68°
26
85°
71°
27
80°
72°
28
79°
71°
29
86°
70°
30
87°
69°
31
86°
71°
1
85°
69°
2
84°
68°
3
83°
66°
4
85°
67°
5
87°
69°
6
85°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grant
Grant's May 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 66° and 72°. The average high for May is 83° with an average low of 69°. 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 Grant. See also: June | July | August.