S
M
T
W
T
F
S
30
72°
51°
31
72°
51°
1
70°
53°
2
69°
51°
3
70°
52°
4
71°
51°
5
69°
52°
6
70°
54°
7
69°
54°
8
69°
55°
9
70°
52°
10
70°
52°
11
67°
51°
12
67°
52°
13
68°
54°
14
72°
51°
15
73°
55°
16
75°
54°
17
74°
55°
18
74°
55°
19
65°
47°
20
72°
53°
21
63°
43°
22
62°
45°
23
Hist. Avg.
68°
48°
24
Hist. Avg.
67°
48°
25
Hist. Avg.
67°
47°
26
Hist. Avg.
66°
47°
27
Hist. Avg.
66°
47°
28
Hist. Avg.
65°
46°
29
Hist. Avg.
65°
46°
30
Hist. Avg.
64°
45°
1
Hist. Avg.
64°
45°
2
Hist. Avg.
64°
44°
3
Hist. Avg.
63°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Marinette
Marinette's September 2026 forecast shows daily high temperatures ranging from 62° to 75°, with overnight lows between 43° and 55°. The average high for September is 70° with an average low of 52°. 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 Marinette. See also: October | November | December.
