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August weather forecast in Decorah

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

	728 mmHg		74%
	5 m/s

27 July, Sunday. day, 27°; night, 18°; partly cloudy

28 July, mon

	728 mmHg		75%
	4.69 m/s

28 July, Monday. day, 27°; night, 18°; partly cloudy

29 July, tue

	729 mmHg		73%
	4 m/s

29 July, Tuesday. day, 26°; night, 17°; rain

30 July, wed

	730 mmHg		73%
	4.1 m/s

30 July, Wednesday. day, 27°; night, 17°; clear

31 July, thu

	729 mmHg		72%
	4.3 m/s

31 July, Thursday. day, 27°; night, 18°; clear

1 August, fri

	729 mmHg		72%
	4.3 m/s

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

2 August, sat

	729 mmHg		74%
	4.3 m/s

2 August, Saturday. day, 27°; night, 18°; partly cloudy

3 August, sun

	729 mmHg		73%
	4.19 m/s

3 August, Sunday. day, 27°; night, 18°; clear

4 August, mon

	729 mmHg		74%
	4.4 m/s

4 August, Monday. day, 26°; night, 18°; rain

5 August, tue

	730 mmHg		74%
	4.3 m/s

5 August, Tuesday. day, 25°; night, 17°; rain

6 August, wed

	729 mmHg		76%
	4.1 m/s

6 August, Wednesday. day, 26°; night, 17°; rain

7 August, thu

	729 mmHg		76%
	4.3 m/s

7 August, Thursday. day, 26°; night, 18°; rain

8 August, fri

	729 mmHg		74%
	4.3 m/s

8 August, Friday. day, 26°; night, 18°; clear

9 August, sat

	728 mmHg		76%
	4.69 m/s

9 August, Saturday. day, 26°; night, 18°; partly cloudy

10 August, sun

	729 mmHg		74%
	4.1 m/s

10 August, Sunday. day, 26°; night, 17°; clear

11 August, mon

	729 mmHg		74%
	4.1 m/s

11 August, Monday. day, 26°; night, 16°; clear

12 August, tue

	729 mmHg		76%
	4.19 m/s

12 August, Tuesday. day, 25°; night, 16°; rain

13 August, wed

	729 mmHg		75%
	4.3 m/s

13 August, Wednesday. day, 25°; night, 17°; rain

14 August, thu

	729 mmHg		75%
	4.5 m/s

14 August, Thursday. day, 25°; night, 16°; rain

15 August, fri

	729 mmHg		74%
	4.3 m/s

15 August, Friday. day, 25°; night, 16°; clear

16 August, sat

	729 mmHg		74%
	4.5 m/s

16 August, Saturday. day, 26°; night, 16°; rain

17 August, sun

	729 mmHg		75%
	4.4 m/s

17 August, Sunday. day, 26°; night, 17°; rain

18 August, mon

	729 mmHg		76%
	4.5 m/s

18 August, Monday. day, 25°; night, 16°; partly cloudy

19 August, tue

	728 mmHg		77%
	4.4 m/s

19 August, Tuesday. day, 25°; night, 16°; rain

20 August, wed

	728 mmHg		76%
	4.69 m/s

20 August, Wednesday. day, 25°; night, 16°; overcast

21 August, thu

	729 mmHg		75%
	4.6 m/s

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

22 August, fri

	730 mmHg		76%
	4.6 m/s

22 August, Friday. day, 25°; night, 16°; clear

23 August, sat

	729 mmHg		76%
	4.69 m/s

23 August, Saturday. day, 26°; night, 17°; partly cloudy

24 August, sun

	729 mmHg		77%
	5.1 m/s

24 August, Sunday. day, 26°; night, 17°; clear

25 August, mon

	729 mmHg		75%
	4.6 m/s

25 August, Monday. day, 26°; night, 18°; clear

26 August, tue

	729 mmHg		76%
	4.19 m/s

26 August, Tuesday. day, 26°; night, 17°; clear

27 August, wed

	729 mmHg		76%
	4.9 m/s

27 August, Wednesday. day, 26°; night, 17°; partly cloudy

28 August, thu

	729 mmHg		77%
	4.6 m/s

28 August, Thursday. day, 26°; night, 17°; rain

29 August, fri

	729 mmHg		76%
	4.69 m/s

29 August, Friday. day, 25°; night, 17°; clear

30 August, sat

	730 mmHg		72%
	4.5 m/s

30 August, Saturday. day, 25°; night, 16°; clear

31 August, sun

	730 mmHg		72%
	4.4 m/s

31 August, Sunday. day, 25°; night, 16°; clear

1 September, mon

	730 mmHg		72%
	4.9 m/s

1 September, Monday. day, 25°; night, 15°; clear

2 September, tue

	729 mmHg		72%
	4.8 m/s

2 September, Tuesday. day, 26°; night, 16°; clear

3 September, wed

	729 mmHg		74%
	4.8 m/s

3 September, Wednesday. day, 25°; night, 16°; clear

4 September, thu

	730 mmHg		71%
	4.6 m/s

4 September, Thursday. day, 25°; night, 15°; clear

5 September, fri

	730 mmHg		72%
	5.1 m/s

5 September, Friday. day, 25°; night, 15°; clear

6 September, sat

	729 mmHg		72%
	4.9 m/s

6 September, Saturday. day, 25°; night, 16°; clear

Average data for 10 years

Decorah August

13

sunny days

11

days with precipitation

5

cloudy days

13 sunny days; 11 days with precipitation; 5 cloudy days;

75

%

air humidity

3

m/s

WindS

97

mm of precipitation

(11% of annual average)

air humidity 75%; 97 millimeters of precipitation (11% of annual average); Wind southerly 3 Meters per second

Weather graphs for August

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

SW

SW

S

S

S

S

S

S

SW

SW

SW

S

SW

SW

S

S

SW

S

S

S

SW

S

S

S

SW

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

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26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Minneapolis
Minnetonka
Wisconsin Dells
Appleton
Dixon
New Ulm
Ottawa
Iowa City
Saint Paul

Cities with similar weather in August

Bishkek
Sofia
Toronto
Genoa
Bratislava
Edinets
Brichani
Rogaška Slatina
San Remo

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

In August, the weather in Decorah is typically warm. Average daily high temperature in August is about 26 degrees above zero. On average, Decorah has 13 sunny, 11 rainy, 6 partly cloudy, and 1 cloudy day in August. The rains are usually heavy.

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