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
76°
47°
5
65°
46°
6
53°
38°
7
55°
34°
8
64°
33°
9
68°
37°
10
58°
32°
11
57°
36°
12
62°
31°
13
61°
43°
14
65°
43°
15
70°
37°
16
82°
53°
17
85°
61°
18
87°
65°
19
83°
51°
20
61°
40°
21
63°
45°
22
64°
51°
23
64°
53°
24
69°
55°
25
74°
58°
26
74°
57°
27
76°
55°
28
78°
55°
29
76°
56°
30
77°
59°
31
77°
58°
1
73°
52°
2
77°
56°
3
72°
56°
4
69°
54°
5
71°
55°
6
74°
58°
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 61° to 83°, with overnight lows between 40° and 59°. The average high for May is 72° with an average low of 54°. 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.
