S
M
T
W
T
F
S
26
91°
74°
27
96°
73°
28
85°
68°
29
85°
64°
30
85°
64°
31
71°
63°
1
81°
64°
2
82°
62°
3
83°
59°
4
82°
62°
5
74°
52°
6
81°
60°
7
85°
63°
8
82°
65°
9
84°
68°
10
81°
64°
11
82°
63°
12
77°
64°
13
80°
63°
14
78°
62°
15
76°
60°
16
77°
62°
17
81°
61°
18
85°
67°
19
86°
66°
20
84°
65°
21
84°
66°
22
85°
66°
23
85°
65°
24
83°
65°
25
81°
64°
26
78°
62°
27
77°
60°
28
81°
63°
29
82°
62°
30
83°
63°
31
83°
63°
1
82°
62°
2
82°
63°
3
83°
63°
4
83°
62°
5
82°
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 74° to 86°, with overnight lows between 52° and 68°. The average high for August is 81° with an average low of 63°. 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.