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August weather forecast in Iowa City

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

	740 mmHg		75%
	5.2 m/s

27 July, Sunday. day, 28°; night, 20°; partly cloudy

28 July, mon

	740 mmHg		75%
	4.69 m/s

28 July, Monday. day, 28°; night, 20°; rain

29 July, tue

	741 mmHg		75%
	4 m/s

29 July, Tuesday. day, 28°; night, 19°; clear

30 July, wed

	741 mmHg		73%
	4.3 m/s

30 July, Wednesday. day, 28°; night, 19°; clear

31 July, thu

	742 mmHg		73%
	4 m/s

31 July, Thursday. day, 28°; night, 19°; clear

1 August, fri

	741 mmHg		71%
	4.1 m/s

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

2 August, sat

	741 mmHg		71%
	4.69 m/s

2 August, Saturday. day, 29°; night, 20°; clear

3 August, sun

	741 mmHg		73%
	4.4 m/s

3 August, Sunday. day, 29°; night, 19°; partly cloudy

4 August, mon

	741 mmHg		73%
	4.69 m/s

4 August, Monday. day, 28°; night, 19°; clear

5 August, tue

	741 mmHg		73%
	4.69 m/s

5 August, Tuesday. day, 28°; night, 19°; overcast

6 August, wed

	741 mmHg		76%
	4.19 m/s

6 August, Wednesday. day, 28°; night, 19°; overcast

7 August, thu

	741 mmHg		74%
	4.69 m/s

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

8 August, fri

	741 mmHg		75%
	4.5 m/s

8 August, Friday. day, 28°; night, 19°; clear

9 August, sat

	740 mmHg		75%
	4.8 m/s

9 August, Saturday. day, 28°; night, 19°; clear

10 August, sun

	741 mmHg		75%
	4.5 m/s

10 August, Sunday. day, 28°; night, 19°; clear

11 August, mon

	741 mmHg		75%
	4.69 m/s

11 August, Monday. day, 27°; night, 18°; rain

12 August, tue

	741 mmHg		76%
	4.5 m/s

12 August, Tuesday. day, 27°; night, 18°; rain

13 August, wed

	741 mmHg		76%
	4.69 m/s

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

14 August, thu

	742 mmHg		74%
	4.4 m/s

14 August, Thursday. day, 27°; night, 18°; clear

15 August, fri

	741 mmHg		74%
	4.6 m/s

15 August, Friday. day, 27°; night, 18°; overcast

16 August, sat

	741 mmHg		75%
	4.8 m/s

16 August, Saturday. day, 27°; night, 18°; rain

17 August, sun

	741 mmHg		76%
	4.6 m/s

17 August, Sunday. day, 27°; night, 19°; rain

18 August, mon

	741 mmHg		76%
	4.4 m/s

18 August, Monday. day, 27°; night, 18°; rain

19 August, tue

	740 mmHg		75%
	4.9 m/s

19 August, Tuesday. day, 27°; night, 18°; rain

20 August, wed

	740 mmHg		76%
	4.9 m/s

20 August, Wednesday. day, 27°; night, 18°; rain

21 August, thu

	741 mmHg		75%
	4.8 m/s

21 August, Thursday. day, 27°; night, 18°; partly cloudy

22 August, fri

	742 mmHg		74%
	4.69 m/s

22 August, Friday. day, 27°; night, 18°; clear

23 August, sat

	742 mmHg		74%
	4.9 m/s

23 August, Saturday. day, 28°; night, 19°; partly cloudy

24 August, sun

	741 mmHg		74%
	5.3 m/s

24 August, Sunday. day, 28°; night, 19°; clear

25 August, mon

	741 mmHg		73%
	5.1 m/s

25 August, Monday. day, 28°; night, 19°; clear

26 August, tue

	741 mmHg		77%
	4.19 m/s

26 August, Tuesday. day, 28°; night, 19°; partly cloudy

27 August, wed

	741 mmHg		76%
	5.1 m/s

27 August, Wednesday. day, 28°; night, 19°; partly cloudy

28 August, thu

	741 mmHg		75%
	5 m/s

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

29 August, fri

	741 mmHg		76%
	4.8 m/s

29 August, Friday. day, 28°; night, 19°; clear

30 August, sat

	742 mmHg		72%
	4.5 m/s

30 August, Saturday. day, 27°; night, 17°; clear

31 August, sun

	742 mmHg		73%
	4.4 m/s

31 August, Sunday. day, 27°; night, 17°; clear

1 September, mon

	742 mmHg		73%
	4.9 m/s

1 September, Monday. day, 27°; night, 17°; clear

2 September, tue

	742 mmHg		71%
	4.69 m/s

2 September, Tuesday. day, 27°; night, 17°; clear

3 September, wed

	741 mmHg		71%
	4.9 m/s

3 September, Wednesday. day, 27°; night, 17°; rain

4 September, thu

	742 mmHg		71%
	4.8 m/s

4 September, Thursday. day, 27°; night, 17°; clear

5 September, fri

	742 mmHg		71%
	5.2 m/s

5 September, Friday. day, 27°; night, 17°; clear

6 September, sat

	742 mmHg		70%
	5.3 m/s

6 September, Saturday. day, 27°; night, 17°; clear

Average data for 10 years

Iowa City August

13

sunny days

9

days with precipitation

4

cloudy days

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

74

%

air humidity

3.1

m/s

WindS

91

mm of precipitation

(10% of annual average)

air humidity 74%; 91 millimeters of precipitation (10% of annual average); Wind southerly 3.1 Meters per second

Weather graphs for August

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

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S

S

S

S

S

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S

S

SW

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

SE

SE

1

Average data for 10 years

2

3

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11

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31

Daytime temperature

Night-time temperature

Cities near you

Chicago
Minneapolis
Kansas City
St. Louis
Minnetonka
Wisconsin Dells
Dixon
New Ulm
Ottawa

Cities with similar weather in August

Florence
Kemer
Podgorica
Verona
Chicago
Marbella
Tsandrypsh
Zagreb
Cannes

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

In August, the weather in Iowa City is typically hot. Average daily high temperature in August is about 28 degrees above zero. On average, Iowa City has 13 sunny, 9 rainy, 6 partly cloudy, and 3 cloudy days in August. The rains are usually heavy.

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