S
M
T
W
T
F
S
30
93°
68°
31
93°
68°
1
92°
67°
2
92°
68°
3
91°
68°
4
92°
67°
5
92°
67°
6
91°
68°
7
91°
65°
8
87°
64°
9
84°
65°
10
85°
65°
11
89°
66°
12
90°
65°
13
88°
62°
14
76°
58°
15
75°
63°
16
86°
62°
17
89°
57°
18
80°
50°
19
76°
53°
20
78°
59°
21
81°
59°
22
82°
58°
23
76°
57°
24
78°
58°
25
78°
57°
26
83°
57°
27
83°
45°
28
72°
47°
29
74°
51°
30
76°
55°
1
81°
57°
2
81°
57°
3
83°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marquette
Marquette's September 2026 forecast shows daily high temperatures ranging from 72° to 93°, with overnight lows between 45° and 68°. The average high for September is 84° 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 September weather will actually feel in Marquette. See also: October | November | December.
