S
M
T
W
T
F
S
30
68°
62°
31
77°
65°
1
79°
63°
2
71°
60°
3
68°
61°
4
70°
60°
5
73°
62°
6
74°
63°
7
71°
58°
8
66°
59°
9
67°
59°
10
64°
56°
11
65°
44°
12
72°
59°
13
72°
60°
14
68°
59°
15
72°
59°
16
72°
58°
17
69°
57°
18
70°
58°
19
71°
58°
20
71°
57°
21
70°
58°
22
70°
57°
23
69°
57°
24
70°
58°
25
71°
57°
26
71°
56°
27
70°
57°
28
70°
54°
29
67°
53°
30
66°
54°
1
68°
55°
2
67°
53°
3
66°
53°
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 64° to 79°, with overnight lows between 44° and 65°. The average high for September is 70° with an average low of 58°. 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.
