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August weather forecast in DeKalb

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

27 July, sun

	738 mmHg		64%
	5.3 m/s

27 July, Sunday. day, 26°; night, 20°; clear

28 July, mon

	739 mmHg		67%
	4.1 m/s

28 July, Monday. day, 26°; night, 20°; clear

29 July, tue

	740 mmHg		66%
	4.3 m/s

29 July, Tuesday. day, 26°; night, 19°; clear

30 July, wed

	739 mmHg		67%
	4.8 m/s

30 July, Wednesday. day, 27°; night, 20°; rain

31 July, thu

	738 mmHg		66%
	4.1 m/s

31 July, Thursday. day, 27°; night, 21°; clear

1 August, fri

	737 mmHg		63%
	5 m/s

1 August, Friday. day, 28°; night, 21°; clear

2 August, sat

	738 mmHg		62%
	4.8 m/s

2 August, Saturday. day, 28°; night, 22°; clear

3 August, sun

	739 mmHg		63%
	4 m/s

3 August, Sunday. day, 26°; night, 20°; partly cloudy

4 August, mon

	738 mmHg		62%
	4.4 m/s

4 August, Monday. day, 27°; night, 20°; clear

5 August, tue

	738 mmHg		63%
	4.6 m/s

5 August, Tuesday. day, 26°; night, 20°; partly cloudy

6 August, wed

	739 mmHg		62%
	4.9 m/s

6 August, Wednesday. day, 26°; night, 20°; clear

7 August, thu

	738 mmHg		62%
	5.1 m/s

7 August, Thursday. day, 27°; night, 20°; rain

8 August, fri

	739 mmHg		63%
	5 m/s

8 August, Friday. day, 27°; night, 21°; partly cloudy

9 August, sat

	738 mmHg		69%
	4.8 m/s

9 August, Saturday. day, 25°; night, 21°; rain

10 August, sun

	739 mmHg		66%
	4.5 m/s

10 August, Sunday. day, 25°; night, 20°; clear

11 August, mon

	739 mmHg		62%
	4.5 m/s

11 August, Monday. day, 26°; night, 19°; clear

12 August, tue

	738 mmHg		61%
	4.4 m/s

12 August, Tuesday. day, 25°; night, 20°; clear

13 August, wed

	739 mmHg		68%
	4 m/s

13 August, Wednesday. day, 25°; night, 19°; clear

14 August, thu

	739 mmHg		61%
	4 m/s

14 August, Thursday. day, 26°; night, 19°; partly cloudy

15 August, fri

	740 mmHg		63%
	4 m/s

15 August, Friday. day, 26°; night, 20°; clear

16 August, sat

	739 mmHg		68%
	4.6 m/s

16 August, Saturday. day, 25°; night, 21°; partly cloudy

17 August, sun

	739 mmHg		62%
	4.4 m/s

17 August, Sunday. day, 26°; night, 19°; partly cloudy

18 August, mon

	737 mmHg		61%
	5.1 m/s

18 August, Monday. day, 27°; night, 20°; clear

19 August, tue

	737 mmHg		62%
	5.1 m/s

19 August, Tuesday. day, 27°; night, 21°; clear

20 August, wed

	738 mmHg		66%
	4.9 m/s

20 August, Wednesday. day, 26°; night, 20°; clear

21 August, thu

	740 mmHg		62%
	5 m/s

21 August, Thursday. day, 25°; night, 20°; rain

22 August, fri

	740 mmHg		62%
	4.8 m/s

22 August, Friday. day, 25°; night, 19°; clear

23 August, sat

	740 mmHg		62%
	5 m/s

23 August, Saturday. day, 26°; night, 19°; clear

24 August, sun

	741 mmHg		58%
	5.1 m/s

24 August, Sunday. day, 26°; night, 19°; clear

25 August, mon

	742 mmHg		62%
	4.6 m/s

25 August, Monday. day, 25°; night, 20°; partly cloudy

26 August, tue

	741 mmHg		64%
	4.9 m/s

26 August, Tuesday. day, 24°; night, 19°; clear

27 August, wed

	740 mmHg		67%
	4.5 m/s

27 August, Wednesday. day, 25°; night, 18°; partly cloudy

28 August, thu

	740 mmHg		68%
	4.1 m/s

28 August, Thursday. day, 25°; night, 19°; rain

29 August, fri

	741 mmHg		63%
	4.4 m/s

29 August, Friday. day, 26°; night, 19°; clear

30 August, sat

	740 mmHg		62%
	4.3 m/s

30 August, Saturday. day, 26°; night, 19°; clear

31 August, sun

	739 mmHg		60%
	4.5 m/s

31 August, Sunday. day, 27°; night, 21°; clear

1 September, mon

	739 mmHg		61%
	5 m/s

1 September, Monday. day, 25°; night, 20°; partly cloudy

2 September, tue

	739 mmHg		61%
	5.1 m/s

2 September, Tuesday. day, 26°; night, 19°; clear

3 September, wed

	739 mmHg		64%
	5.3 m/s

3 September, Wednesday. day, 24°; night, 19°; partly cloudy

4 September, thu

	740 mmHg		66%
	4.6 m/s

4 September, Thursday. day, 23°; night, 18°; partly cloudy

5 September, fri

	740 mmHg		60%
	5.4 m/s

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

6 September, sat

	740 mmHg		55%
	5.4 m/s

6 September, Saturday. day, 25°; night, 19°; clear

Average data for 10 years

DeKalb August

19

sunny days

4

days with precipitation

8

cloudy days

19 sunny days; 4 days with precipitation; 8 cloudy days;

63

%

air humidity

3.2

m/s

WindW

51

mm of precipitation

(6% of annual average)

air humidity 63%; 51 millimeters of precipitation (6% of annual average); Wind westerly 3.2 Meters per second

Weather graphs for August

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

SW

W

W

E

NW

W

W

W

NW

NW

NW

SW

NW

W

SW

SW

W

SW

SW

SW

W

SE

SW

SW

NW

SE

NE

E

E

SE

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

31

Daytime temperature

Night-time temperature

Cities near you

Chicago
St. Louis
Indianapolis
Michigan City
Wisconsin Dells
Appleton
Dixon
Ottawa
Iowa City

Cities with similar weather in August

Ankara
Kathmandu
Bergamo
Denver
Urumqi
Triest
Detroit
Montpellier
Bursa

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

August in DeKalb is the sunniest month of the year. In August, the weather in DeKalb is typically warm. Average daily high temperature in August is about 26 degrees above zero. On average, DeKalb has 19 sunny, 8 partly cloudy, and 4 rainy days in August. The rains are usually light. August as well as September is considered the most comfortable time to visit DeKalb.

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