S
M
T
W
T
F
S
26
66°
41°
27
70°
41°
28
62°
49°
29
54°
41°
30
53°
39°
1
48°
37°
2
50°
31°
3
64°
36°
4
75°
52°
5
59°
40°
6
54°
37°
7
52°
39°
8
58°
40°
9
60°
41°
10
59°
43°
11
58°
41°
12
60°
43°
13
62°
47°
14
59°
44°
15
62°
47°
16
66°
48°
17
67°
46°
18
66°
50°
19
68°
52°
20
69°
52°
21
71°
46°
22
65°
43°
23
63°
43°
24
64°
44°
25
64°
45°
26
65°
45°
27
65°
46°
28
66°
45°
29
66°
46°
30
67°
53°
31
73°
52°
1
68°
50°
2
70°
53°
3
74°
57°
4
76°
57°
5
76°
58°
6
78°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grand Blanc
Grand Blanc's May 2026 forecast shows daily high temperatures ranging from 52° to 78°, with overnight lows between 37° and 59°. The average high for May is 65° with an average low of 47°. 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 Grand Blanc. See also: June | July | August.
