S
M
T
W
T
F
S
30
60°
46°
31
60°
51°
1
63°
43°
2
59°
51°
3
60°
45°
4
64°
40°
5
57°
38°
6
55°
40°
7
56°
42°
8
58°
44°
9
60°
43°
10
61°
41°
11
61°
42°
12
51°
37°
13
59°
46°
14
58°
47°
15
Hist. Avg.
52°
38°
16
Hist. Avg.
51°
37°
17
Hist. Avg.
51°
37°
18
Hist. Avg.
50°
37°
19
Hist. Avg.
50°
36°
20
Hist. Avg.
49°
36°
21
Hist. Avg.
49°
36°
22
Hist. Avg.
48°
35°
23
Hist. Avg.
48°
35°
24
Hist. Avg.
47°
35°
25
Hist. Avg.
47°
34°
26
Hist. Avg.
46°
34°
27
Hist. Avg.
46°
34°
28
Hist. Avg.
45°
33°
29
Hist. Avg.
45°
33°
30
Hist. Avg.
44°
33°
1
Hist. Avg.
44°
32°
2
Hist. Avg.
43°
32°
3
Hist. Avg.
43°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fond-du-Lac
Fond-du-Lac's September 2026 forecast shows daily high temperatures ranging from 51° to 64°, with overnight lows between 37° and 51°. The average high for September is 59° with an average low of 44°. 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 Fond-du-Lac. See also: October | November | December.
