S
M
T
W
T
F
S
26
70°
57°
27
72°
55°
28
68°
57°
29
70°
52°
30
70°
45°
31
73°
48°
1
70°
54°
2
70°
50°
3
77°
45°
4
84°
46°
5
77°
48°
6
68°
57°
7
70°
54°
8
72°
52°
9
68°
52°
10
70°
46°
11
73°
52°
12
72°
61°
13
66°
59°
14
66°
59°
15
66°
59°
16
70°
54°
17
66°
55°
18
70°
57°
19
70°
57°
20
72°
54°
21
66°
58°
22
69°
60°
23
70°
54°
24
75°
55°
25
70°
54°
26
69°
52°
27
68°
51°
28
70°
49°
29
68°
50°
30
67°
48°
31
68°
50°
1
67°
50°
2
70°
49°
3
69°
53°
4
65°
50°
5
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Bay City
Bay City's August 2026 forecast shows daily high temperatures ranging from 65° to 75°, with overnight lows between 48° and 60°. The average high for August is 69° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Bay City. See also: September | October | November.