S
M
T
W
T
F
S
26
83°
67°
27
80°
61°
28
83°
63°
29
84°
62°
30
80°
59°
31
82°
58°
1
79°
59°
2
79°
58°
3
80°
59°
4
79°
58°
5
79°
59°
6
80°
60°
7
79°
62°
8
81°
66°
9
84°
62°
10
83°
65°
11
85°
58°
12
83°
66°
13
88°
57°
14
82°
57°
15
79°
63°
16
79°
62°
17
81°
57°
18
78°
56°
19
77°
58°
20
78°
56°
21
79°
57°
22
75°
56°
23
77°
57°
24
77°
55°
25
78°
63°
26
77°
64°
27
82°
65°
28
86°
57°
29
85°
59°
30
78°
57°
31
76°
56°
1
75°
61°
2
75°
54°
3
76°
51°
4
73°
60°
5
74°
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 73° to 88°, with overnight lows between 51° and 67°. The average high for August is 80° 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.