S
M
T
W
T
F
S
26
88°
65°
27
86°
66°
28
84°
65°
29
84°
64°
30
82°
63°
31
77°
62°
1
78°
63°
2
82°
63°
3
84°
62°
4
79°
59°
5
77°
58°
6
78°
59°
7
83°
63°
8
78°
62°
9
81°
62°
10
80°
61°
11
81°
62°
12
83°
63°
13
84°
63°
14
83°
62°
15
76°
59°
16
76°
60°
17
79°
61°
18
82°
62°
19
83°
61°
20
83°
62°
21
73°
51°
22
74°
53°
23
75°
52°
24
73°
59°
25
74°
52°
26
75°
54°
27
73°
59°
28
74°
57°
29
81°
51°
30
75°
50°
31
77°
58°
1
73°
55°
2
76°
54°
3
80°
59°
4
82°
52°
5
79°
50°
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 50° and 66°. The average high for August is 79° 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.