S
M
T
W
T
F
S
26
56°
39°
27
54°
49°
28
56°
43°
29
62°
37°
30
70°
44°
1
59°
49°
2
67°
50°
3
82°
49°
4
61°
54°
5
60°
53°
6
56°
51°
7
57°
48°
8
57°
49°
9
67°
51°
10
61°
53°
11
70°
52°
12
71°
51°
13
58°
52°
14
57°
49°
15
53°
47°
16
56°
45°
17
59°
38°
18
60°
48°
19
61°
52°
20
62°
49°
21
66°
45°
22
60°
51°
23
59°
50°
24
61°
45°
25
57°
49°
26
61°
44°
27
62°
50°
28
60°
51°
29
58°
48°
30
58°
50°
31
58°
51°
1
62°
51°
2
75°
54°
3
63°
50°
4
65°
49°
5
64°
48°
6
62°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bay City
Bay City's May 2026 forecast shows daily high temperatures ranging from 58° to 75°, with overnight lows between 48° and 54°. The average high for May is 63° with an average low of 50°. 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 Bay City. See also: June | July | August.