S
M
T
W
T
F
S
30
84°
67°
31
89°
68°
1
90°
71°
2
86°
67°
3
80°
69°
4
81°
67°
5
76°
61°
6
78°
55°
7
78°
53°
8
75°
58°
9
82°
61°
10
76°
53°
11
78°
61°
12
79°
52°
13
65°
45°
14
66°
59°
15
73°
56°
16
66°
55°
17
69°
54°
18
67°
55°
19
66°
49°
20
65°
52°
21
68°
51°
22
70°
55°
23
71°
52°
24
68°
48°
25
67°
54°
26
72°
55°
27
72°
54°
28
71°
54°
29
68°
52°
30
70°
51°
1
65°
50°
2
61°
50°
3
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in North Fond du Lac
North Fond du Lac's September 2026 forecast shows daily high temperatures ranging from 61° to 79°, with overnight lows between 45° and 61°. The average high for September is 69° with an average low of 53°. 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 North Fond du Lac. See also: October | November | December.
