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September weather forecast in Gurnee

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		72%
	5.2 m/s		+24

31 August, Sunday. day, 25°; night, 19°; clear

1 September, mon

	743 mmHg		73%
	5.1 m/s		+23

1 September, Monday. day, 24°; night, 19°; clear

2 September, tue

	743 mmHg		72%
	5.4 m/s		+24

2 September, Tuesday. day, 25°; night, 19°; clear

3 September, wed

	742 mmHg		71%
	5.4 m/s		+23

3 September, Wednesday. day, 25°; night, 19°; clear

4 September, thu

	743 mmHg		72%
	5.4 m/s		+23

4 September, Thursday. day, 24°; night, 18°; clear

5 September, fri

	743 mmHg		71%
	5.4 m/s		+23

5 September, Friday. day, 24°; night, 18°; clear

6 September, sat

	743 mmHg		72%
	5.8 m/s		+23

6 September, Saturday. day, 24°; night, 18°; partly cloudy

7 September, sun

	742 mmHg		72%
	5.9 m/s		+21

7 September, Sunday. day, 24°; night, 18°; rain

8 September, mon

	742 mmHg		73%
	5.9 m/s		+22

8 September, Monday. day, 22°; night, 17°; rain

9 September, tue

	743 mmHg		75%
	5.5 m/s		+22

9 September, Tuesday. day, 22°; night, 17°; partly cloudy

10 September, wed

	743 mmHg		74%
	5.7 m/s		+21

10 September, Wednesday. day, 23°; night, 17°; clear

11 September, thu

	743 mmHg		73%
	5.9 m/s		+21

11 September, Thursday. day, 23°; night, 17°; rain

12 September, fri

	742 mmHg		72%
	5.7 m/s		+21

12 September, Friday. day, 23°; night, 17°; rain

13 September, sat

	742 mmHg		73%
	5.9 m/s		+21

13 September, Saturday. day, 22°; night, 16°; rain

14 September, sun

	743 mmHg		71%
	5.6 m/s		+20

14 September, Sunday. day, 22°; night, 16°; clear

15 September, mon

	744 mmHg		71%
	5.6 m/s		+20

15 September, Monday. day, 21°; night, 16°; clear

16 September, tue

	744 mmHg		72%
	5.6 m/s		+21

16 September, Tuesday. day, 22°; night, 16°; clear

17 September, wed

	743 mmHg		71%
	5.4 m/s		+20

17 September, Wednesday. day, 22°; night, 16°; clear

18 September, thu

	743 mmHg		72%
	5.5 m/s		+20

18 September, Thursday. day, 22°; night, 16°; clear

19 September, fri

	741 mmHg		73%
	6.3 m/s		+21

19 September, Friday. day, 22°; night, 16°; rain

20 September, sat

	741 mmHg		74%
	6.1 m/s		+20

20 September, Saturday. day, 22°; night, 16°; rain

21 September, sun

	742 mmHg		72%
	6.3 m/s		+20

21 September, Sunday. day, 22°; night, 16°; partly cloudy

22 September, mon

	743 mmHg		72%
	6.2 m/s		+20

22 September, Monday. day, 20°; night, 15°; rain

23 September, tue

	743 mmHg		71%
	5.6 m/s		+19

23 September, Tuesday. day, 20°; night, 14°; partly cloudy

24 September, wed

	743 mmHg		72%
	6.1 m/s		+19

24 September, Wednesday. day, 20°; night, 14°; overcast

25 September, thu

	742 mmHg		72%
	6 m/s		+20

25 September, Thursday. day, 20°; night, 14°; partly cloudy

26 September, fri

	741 mmHg		70%
	6 m/s		+19

26 September, Friday. day, 21°; night, 15°; clear

27 September, sat

	740 mmHg		72%
	6.2 m/s		+19

27 September, Saturday. day, 20°; night, 14°; partly cloudy

28 September, sun

	741 mmHg		74%
	6.5 m/s		+18

28 September, Sunday. day, 18°; night, 13°; rain

29 September, mon

	743 mmHg		72%
	6.8 m/s		+17

29 September, Monday. day, 19°; night, 13°; partly cloudy

30 September, tue

	742 mmHg		70%
	6.6 m/s		+17

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

1 October, wed

	743 mmHg		69%
	6.6 m/s		+17

1 October, Wednesday. day, 19°; night, 13°; clear

2 October, thu

	743 mmHg		73%
	6.4 m/s		+17

2 October, Thursday. day, 19°; night, 13°; partly cloudy

3 October, fri

	742 mmHg		73%
	6.5 m/s		+17

3 October, Friday. day, 18°; night, 13°; rain

4 October, sat

	743 mmHg		73%
	6.5 m/s		+18

4 October, Saturday. day, 18°; night, 13°; rain

Average data for 10 years

Gurnee September

13

sunny days

9

days with precipitation

4

cloudy days

13 sunny days; 9 days with precipitation; 4 cloudy days;

72

%

air humidity

4.19

m/s

WindS

74

mm of precipitation

(8% of annual average)

+21

°C

Water temperature

air humidity 72%; 74 millimeters of precipitation (8% of annual average); Wind southerly 4.19 Meters per second; Water temperature +21°

Weather graphs for September

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

SE

S

S

S

S

S

S

S

SE

S

S

S

S

S

S

S

S

S

S

S

SW

S

S

S

S

S

S

S

S

S

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Daytime temperature

Night-time temperature

Cities near you

Chicago
Indianapolis
Michigan City
Wisconsin Dells
Appleton
Dixon
Ottawa
Iowa City
Washington

Cities with similar weather in September

Suhum
Burgas
Varna
Tivat
Podgorica
Toronto
The Golden Sands
Genoa
Boston

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

In September, the weather in Gurnee is typically warm. Average daily high temperature in September is about 22 degrees above zero. On average, Gurnee has 13 sunny, 9 rainy, 7 partly cloudy, and 1 cloudy day in September. The rains are usually heavy.

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