S
M
T
W
T
F
S
26
104°
79°
27
109°
71°
28
106°
71°
29
101°
72°
30
96°
68°
31
95°
67°
1
95°
66°
2
94°
67°
3
96°
68°
4
92°
67°
5
86°
65°
6
87°
70°
7
95°
71°
8
95°
71°
9
96°
72°
10
95°
71°
11
96°
72°
12
96°
71°
13
95°
71°
14
95°
70°
15
94°
70°
16
93°
68°
17
89°
69°
18
93°
68°
19
93°
69°
20
94°
70°
21
94°
70°
22
93°
69°
23
93°
68°
24
92°
68°
25
93°
69°
26
93°
69°
27
92°
68°
28
93°
68°
29
92°
67°
30
92°
68°
31
91°
68°
1
91°
67°
2
90°
66°
3
88°
67°
4
80°
55°
5
86°
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 80° to 109°, with overnight lows between 55° and 79°. The average high for August is 94° with an average low of 69°. 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.