S
M
T
W
T
F
S
26
77°
64°
27
76°
64°
28
74°
63°
29
75°
63°
30
72°
61°
31
71°
60°
1
71°
64°
2
75°
65°
3
79°
64°
4
75°
64°
5
71°
63°
6
75°
64°
7
80°
63°
8
79°
54°
9
77°
54°
10
70°
57°
11
72°
55°
12
71°
54°
13
71°
56°
14
72°
58°
15
74°
59°
16
74°
57°
17
71°
54°
18
73°
61°
19
75°
58°
20
75°
61°
21
77°
60°
22
78°
62°
23
78°
60°
24
76°
54°
25
73°
56°
26
68°
61°
27
74°
56°
28
72°
57°
29
72°
58°
30
71°
54°
31
70°
56°
1
68°
55°
2
68°
54°
3
71°
59°
4
75°
59°
5
75°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marquette
Marquette's August 2026 forecast shows daily high temperatures ranging from 68° to 80°, with overnight lows between 54° and 65°. The average high for August is 74° with an average low of 59°. 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 Marquette. See also: September | October | November.