S
M
T
W
T
F
S
26
45°
35°
27
52°
40°
28
50°
32°
29
59°
35°
30
60°
32°
1
66°
28°
2
76°
26°
3
75°
37°
4
76°
35°
5
49°
40°
6
58°
37°
7
74°
33°
8
76°
41°
9
78°
40°
10
76°
42°
11
92°
47°
12
80°
49°
13
87°
41°
14
91°
53°
15
90°
39°
16
84°
51°
17
68°
48°
18
50°
43°
19
64°
40°
20
56°
43°
21
64°
39°
22
70°
43°
23
76°
49°
24
90°
54°
25
87°
59°
26
82°
57°
27
75°
58°
28
75°
56°
29
76°
56°
30
74°
52°
31
72°
51°
1
80°
56°
2
80°
54°
3
78°
55°
4
84°
55°
5
80°
52°
6
82°
57°
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 72° to 90°, with overnight lows between 49° and 59°. The average high for May is 79° 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 Grant. See also: June | July | August.