S
M
T
W
T
F
S
26
70°
46°
27
63°
45°
28
59°
43°
29
55°
36°
30
52°
30°
1
54°
36°
2
64°
30°
3
72°
45°
4
68°
36°
5
54°
32°
6
51°
36°
7
60°
37°
8
66°
38°
9
68°
45°
10
67°
42°
11
67°
49°
12
70°
48°
13
69°
49°
14
67°
49°
15
69°
53°
16
71°
50°
17
69°
47°
18
70°
52°
19
72°
51°
20
68°
49°
21
65°
44°
22
63°
44°
23
65°
45°
24
65°
44°
25
66°
45°
26
65°
46°
27
65°
46°
28
66°
47°
29
68°
55°
30
67°
53°
31
68°
50°
1
73°
55°
2
75°
57°
3
77°
58°
4
78°
59°
5
78°
60°
6
77°
60°
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 51° to 78°, with overnight lows between 32° and 60°. The average high for May is 68° with an average low of 48°. 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.