S
M
T
W
T
F
S
26
65°
52°
27
66°
49°
28
71°
43°
29
73°
50°
30
67°
51°
1
64°
50°
2
59°
52°
3
67°
44°
4
73°
43°
5
77°
51°
6
81°
55°
7
73°
54°
8
71°
53°
9
76°
57°
10
81°
61°
11
83°
56°
12
68°
50°
13
77°
50°
14
78°
58°
15
75°
50°
16
77°
50°
17
N/A
18
89°
63°
19
88°
65°
20
89°
66°
21
84°
61°
22
79°
64°
23
81°
68°
24
79°
67°
25
80°
66°
26
81°
67°
27
81°
63°
28
82°
64°
29
82°
63°
30
81°
62°
31
82°
65°
1
83°
66°
2
82°
66°
3
83°
67°
4
81°
67°
5
79°
66°
6
81°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Bay City
Bay City's May 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 61° and 68°. The average high for May is 82° with an average low of 65°. 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.