S
M
T
W
T
F
S
26
85°
64°
27
79°
61°
28
75°
55°
29
85°
52°
30
86°
60°
31
81°
63°
1
70°
59°
2
71°
49°
3
83°
45°
4
75°
58°
5
74°
56°
6
82°
50°
7
85°
61°
8
76°
56°
9
80°
53°
10
78°
52°
11
79°
54°
12
78°
53°
13
74°
58°
14
68°
58°
15
71°
64°
16
69°
59°
17
71°
63°
18
73°
58°
19
67°
56°
20
66°
57°
21
67°
58°
22
69°
58°
23
66°
56°
24
65°
58°
25
66°
57°
26
65°
64°
27
76°
62°
28
72°
62°
29
74°
62°
30
74°
63°
31
76°
63°
1
77°
62°
2
76°
62°
3
76°
61°
4
75°
61°
5
75°
62°
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 65° to 77°, with overnight lows between 56° and 64°. The average high for August is 71° with an average low of 60°. 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.