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September weather forecast in Fond Du Lac

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

31 August, sun

	743 mmHg		75%
	4.8 m/s

31 August, Sunday. day, 24°; night, 17°; clear

1 September, mon

	743 mmHg		75%
	5.1 m/s

1 September, Monday. day, 24°; night, 17°; clear

2 September, tue

	742 mmHg		75%
	5.3 m/s

2 September, Tuesday. day, 24°; night, 17°; clear

3 September, wed

	742 mmHg		76%
	5.4 m/s

3 September, Wednesday. day, 24°; night, 17°; clear

4 September, thu

	743 mmHg		74%
	5.2 m/s

4 September, Thursday. day, 24°; night, 17°; clear

5 September, fri

	743 mmHg		76%
	5.3 m/s

5 September, Friday. day, 24°; night, 16°; clear

6 September, sat

	742 mmHg		77%
	5.6 m/s

6 September, Saturday. day, 24°; night, 17°; clear

7 September, sun

	742 mmHg		77%
	5.6 m/s

7 September, Sunday. day, 23°; night, 17°; rain

8 September, mon

	742 mmHg		77%
	5.6 m/s

8 September, Monday. day, 22°; night, 15°; overcast

9 September, tue

	743 mmHg		78%
	4.9 m/s

9 September, Tuesday. day, 22°; night, 15°; clear

10 September, wed

	743 mmHg		77%
	5.8 m/s

10 September, Wednesday. day, 22°; night, 15°; rain

11 September, thu

	743 mmHg		76%
	6.2 m/s

11 September, Thursday. day, 22°; night, 15°; clear

12 September, fri

	742 mmHg		77%
	5.8 m/s

12 September, Friday. day, 21°; night, 15°; rain

13 September, sat

	742 mmHg		76%
	5.8 m/s

13 September, Saturday. day, 21°; night, 15°; rain

14 September, sun

	742 mmHg		77%
	5.4 m/s

14 September, Sunday. day, 21°; night, 14°; partly cloudy

15 September, mon

	744 mmHg		76%
	5.4 m/s

15 September, Monday. day, 21°; night, 14°; partly cloudy

16 September, tue

	744 mmHg		75%
	5.4 m/s

16 September, Tuesday. day, 21°; night, 14°; clear

17 September, wed

	743 mmHg		74%
	5.2 m/s

17 September, Wednesday. day, 22°; night, 15°; clear

18 September, thu

	743 mmHg		76%
	5.5 m/s

18 September, Thursday. day, 21°; night, 14°; clear

19 September, fri

	741 mmHg		77%
	6.3 m/s

19 September, Friday. day, 21°; night, 15°; rain

20 September, sat

	741 mmHg		79%
	6 m/s

20 September, Saturday. day, 21°; night, 14°; rain

21 September, sun

	741 mmHg		76%
	6.3 m/s

21 September, Sunday. day, 21°; night, 14°; overcast

22 September, mon

	742 mmHg		77%
	6.2 m/s

22 September, Monday. day, 19°; night, 13°; rain

23 September, tue

	743 mmHg		76%
	5.3 m/s

23 September, Tuesday. day, 19°; night, 13°; clear

24 September, wed

	742 mmHg		77%
	6.2 m/s

24 September, Wednesday. day, 19°; night, 13°; overcast

25 September, thu

	741 mmHg		77%
	5.9 m/s

25 September, Thursday. day, 20°; night, 13°; rain

26 September, fri

	741 mmHg		76%
	6 m/s

26 September, Friday. day, 19°; night, 13°; rain

27 September, sat

	740 mmHg		78%
	5.7 m/s

27 September, Saturday. day, 19°; night, 13°; partly cloudy

28 September, sun

	741 mmHg		78%
	5.9 m/s

28 September, Sunday. day, 18°; night, 12°; partly cloudy

29 September, mon

	743 mmHg		76%
	6.3 m/s

29 September, Monday. day, 18°; night, 11°; clear

30 September, tue

	742 mmHg		75%
	6.6 m/s

30 September, Tuesday. day, 18°; night, 11°; partly cloudy

1 October, wed

	742 mmHg		75%
	6.4 m/s

1 October, Wednesday. day, 18°; night, 12°; clear

2 October, thu

	742 mmHg		76%
	6.4 m/s

2 October, Thursday. day, 17°; night, 11°; rain

3 October, fri

	742 mmHg		77%
	6.1 m/s

3 October, Friday. day, 17°; night, 11°; rain

4 October, sat

	743 mmHg		75%
	6.1 m/s

4 October, Saturday. day, 16°; night, 11°; partly cloudy

Average data for 10 years

Fond Du Lac September

13

sunny days

9

days with precipitation

5

cloudy days

13 sunny days; 9 days with precipitation; 5 cloudy days;

76

%

air humidity

4

m/s

WindS

70

mm of precipitation

(9% of annual average)

air humidity 76%; 70 millimeters of precipitation (9% of annual average); Wind southerly 4 Meters per second

Weather graphs for September

TemperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

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S

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SW

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S

S

S

SW

SW

S

S

S

S

S

S

S

S

1

Average data for 10 years

2

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Daytime temperature

Night-time temperature

Cities near you

Chicago
Michigan City
Wisconsin Dells
Appleton
Dixon
Ottawa
Iowa City
Gurnee
Wisconsin Rapids

Cities with similar weather in September

Podgorica
Toronto
Vancouver
Boston
Seattle
Balkhash
Montreal
Albena
San Sebastian

The weather forecast for September 2025 is based on historical data from the past 10 years.

September in Fond Du Lac is the sunniest month of the year. In September, the weather in Fond Du Lac is typically warm. Average daily high temperature in September is about 21 degrees above zero. On average, Fond Du Lac has 13 sunny, 9 rainy, 5 partly cloudy, and 3 cloudy days in September. The rains are usually heavy.

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