S
M
T
W
T
F
S
26
56°
22°
27
52°
22°
28
62°
23°
29
64°
37°
30
68°
28°
1
72°
30°
2
76°
34°
3
78°
34°
4
77°
36°
5
74°
40°
6
76°
36°
7
71°
43°
8
71°
32°
9
74°
31°
10
81°
34°
11
75°
41°
12
89°
36°
13
77°
37°
14
67°
33°
15
65°
32°
16
52°
31°
17
54°
32°
18
57°
30°
19
62°
37°
20
67°
39°
21
68°
37°
22
74°
44°
23
69°
34°
24
66°
38°
25
62°
33°
26
60°
32°
27
62°
34°
28
60°
34°
29
60°
32°
30
63°
34°
31
64°
35°
1
65°
40°
2
68°
41°
3
69°
42°
4
69°
42°
5
68°
41°
6
69°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Granite
Granite's May 2026 forecast shows daily high temperatures ranging from 57° to 74°, with overnight lows between 30° and 44°. The average high for May is 65° with an average low of 37°. 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 Granite. See also: June | July | August.