S
M
T
W
T
F
S
26
104°
79°
27
108°
81°
28
95°
77°
29
87°
78°
30
86°
78°
31
93°
65°
1
90°
63°
2
92°
66°
3
96°
70°
4
93°
70°
5
90°
67°
6
95°
67°
7
102°
70°
8
103°
69°
9
99°
69°
10
100°
70°
11
101°
71°
12
98°
68°
13
91°
65°
14
87°
66°
15
91°
69°
16
94°
70°
17
94°
70°
18
93°
69°
19
93°
69°
20
91°
68°
21
90°
68°
22
84°
66°
23
87°
66°
24
83°
65°
25
82°
63°
26
84°
63°
27
83°
65°
28
81°
65°
29
82°
67°
30
82°
66°
31
83°
66°
1
87°
65°
2
83°
62°
3
83°
64°
4
84°
65°
5
85°
64°
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 81° to 103°, with overnight lows between 62° and 71°. The average high for August is 90° with an average low of 67°. 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.