S
M
T
W
T
F
S
30
75°
50°
31
77°
58°
1
73°
55°
2
76°
54°
3
80°
59°
4
82°
52°
5
79°
50°
6
75°
48°
7
74°
50°
8
74°
55°
9
77°
51°
10
70°
47°
11
70°
45°
12
69°
46°
13
70°
49°
14
69°
44°
15
68°
43°
16
66°
43°
17
66°
42°
18
65°
42°
19
66°
43°
20
66°
43°
21
67°
44°
22
69°
49°
23
70°
50°
24
72°
50°
25
72°
49°
26
71°
41°
27
68°
42°
28
63°
49°
29
62°
46°
30
70°
46°
1
67°
47°
2
62°
39°
3
60°
44°
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 60° to 82°, with overnight lows between 39° and 59°. The average high for September is 70° with an average low of 48°. 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.
