S
M
T
W
T
F
S
26
48°
37°
27
46°
37°
28
52°
35°
29
42°
30°
30
41°
25°
1
53°
20°
2
64°
19°
3
64°
31°
4
59°
34°
5
39°
29°
6
41°
27°
7
51°
20°
8
61°
20°
9
53°
39°
10
49°
26°
11
60°
20°
12
58°
38°
13
67°
31°
14
75°
28°
15
78°
50°
16
65°
38°
17
60°
30°
18
55°
42°
19
47°
32°
20
58°
29°
21
66°
36°
22
62°
42°
23
56°
41°
24
72°
44°
25
75°
48°
26
76°
47°
27
74°
46°
28
74°
49°
29
80°
50°
30
77°
51°
31
73°
48°
1
71°
42°
2
64°
47°
3
68°
47°
4
69°
48°
5
71°
48°
6
68°
47°
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 47° to 80°, with overnight lows between 29° and 51°. The average high for May is 68° with an average low of 44°. 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.