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August weather forecast in Mattoon

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

	743 mmHg		74%
	4.4 m/s

27 July, Sunday. day, 29°; night, 21°; rain

28 July, mon

	743 mmHg		75%
	4.3 m/s

28 July, Monday. day, 29°; night, 21°; rain

29 July, tue

	744 mmHg		74%
	4.19 m/s

29 July, Tuesday. day, 29°; night, 21°; clear

30 July, wed

	744 mmHg		75%
	3.8 m/s

30 July, Wednesday. day, 28°; night, 20°; rain

31 July, thu

	744 mmHg		74%
	3.7 m/s

31 July, Thursday. day, 28°; night, 20°; clear

1 August, fri

	744 mmHg		72%
	3.7 m/s

1 August, Friday. day, 29°; night, 20°; clear

2 August, sat

	744 mmHg		73%
	3.8 m/s

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

3 August, sun

	744 mmHg		73%
	3.9 m/s

3 August, Sunday. day, 30°; night, 21°; clear

4 August, mon

	744 mmHg		72%
	3.9 m/s

4 August, Monday. day, 29°; night, 21°; clear

5 August, tue

	744 mmHg		74%
	4.19 m/s

5 August, Tuesday. day, 29°; night, 20°; overcast

6 August, wed

	744 mmHg		73%
	4.1 m/s

6 August, Wednesday. day, 28°; night, 20°; rain

7 August, thu

	744 mmHg		74%
	4.1 m/s

7 August, Thursday. day, 28°; night, 20°; partly cloudy

8 August, fri

	744 mmHg		74%
	4.1 m/s

8 August, Friday. day, 29°; night, 20°; rain

9 August, sat

	744 mmHg		75%
	4.1 m/s

9 August, Saturday. day, 28°; night, 21°; rain

10 August, sun

	743 mmHg		74%
	4.3 m/s

10 August, Sunday. day, 29°; night, 20°; clear

11 August, mon

	744 mmHg		74%
	4.1 m/s

11 August, Monday. day, 28°; night, 20°; clear

12 August, tue

	744 mmHg		72%
	4.3 m/s

12 August, Tuesday. day, 28°; night, 19°; clear

13 August, wed

	744 mmHg		74%
	3.9 m/s

13 August, Wednesday. day, 28°; night, 19°; rain

14 August, thu

	744 mmHg		73%
	4.1 m/s

14 August, Thursday. day, 27°; night, 19°; partly cloudy

15 August, fri

	744 mmHg		74%
	4.19 m/s

15 August, Friday. day, 28°; night, 19°; partly cloudy

16 August, sat

	744 mmHg		72%
	4.19 m/s

16 August, Saturday. day, 28°; night, 20°; clear

17 August, sun

	744 mmHg		73%
	4.4 m/s

17 August, Sunday. day, 28°; night, 20°; rain

18 August, mon

	744 mmHg		74%
	4 m/s

18 August, Monday. day, 28°; night, 20°; partly cloudy

19 August, tue

	743 mmHg		74%
	4.1 m/s

19 August, Tuesday. day, 28°; night, 20°; rain

20 August, wed

	744 mmHg		74%
	4.5 m/s

20 August, Wednesday. day, 28°; night, 20°; rain

21 August, thu

	744 mmHg		73%
	4.3 m/s

21 August, Thursday. day, 28°; night, 19°; clear

22 August, fri

	745 mmHg		71%
	3.9 m/s

22 August, Friday. day, 28°; night, 20°; clear

23 August, sat

	745 mmHg		71%
	4.19 m/s

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

24 August, sun

	744 mmHg		71%
	4.6 m/s

24 August, Sunday. day, 29°; night, 20°; rain

25 August, mon

	744 mmHg		71%
	4.19 m/s

25 August, Monday. day, 29°; night, 20°; clear

26 August, tue

	744 mmHg		73%
	4.19 m/s

26 August, Tuesday. day, 29°; night, 20°; rain

27 August, wed

	744 mmHg		73%
	3.9 m/s

27 August, Wednesday. day, 29°; night, 21°; partly cloudy

28 August, thu

	744 mmHg		72%
	4 m/s

28 August, Thursday. day, 30°; night, 20°; clear

29 August, fri

	744 mmHg		73%
	4.19 m/s

29 August, Friday. day, 29°; night, 21°; clear

30 August, sat

	744 mmHg		72%
	4.4 m/s

30 August, Saturday. day, 28°; night, 20°; partly cloudy

31 August, sun

	744 mmHg		70%
	4.19 m/s

31 August, Sunday. day, 28°; night, 19°; overcast

1 September, mon

	744 mmHg		71%
	4.3 m/s

1 September, Monday. day, 28°; night, 19°; partly cloudy

2 September, tue

	745 mmHg		69%
	4.19 m/s

2 September, Tuesday. day, 28°; night, 19°; clear

3 September, wed

	744 mmHg		69%
	4 m/s

3 September, Wednesday. day, 28°; night, 19°; partly cloudy

4 September, thu

	744 mmHg		67%
	4.19 m/s

4 September, Thursday. day, 28°; night, 18°; clear

5 September, fri

	745 mmHg		68%
	4.3 m/s

5 September, Friday. day, 28°; night, 18°; clear

6 September, sat

	745 mmHg		68%
	4.8 m/s

6 September, Saturday. day, 28°; night, 18°; clear

Average data for 10 years

Mattoon August

14

sunny days

9

days with precipitation

4

cloudy days

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

73

%

air humidity

2.8

m/s

WindS

79

mm of precipitation

(8% of annual average)

air humidity 73%; 79 millimeters of precipitation (8% of annual average); Wind southerly 2.8 Meters per second

Weather graphs for August

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

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SE

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SE

SE

1

Average data for 10 years

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Daytime temperature

Night-time temperature

Cities near you

Chicago
Indianapolis
Nashville
Michigan City
St. Louis
Ottawa
Milwaukee
Madison
Cincinnati

Cities with similar weather in August

Barcelona
Gagra
Batumi
Pitsunda
New York
Rimini
Salou
Tivat
Retimno

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

In August, the weather in Mattoon is typically hot. Average daily high temperature in August is about 28 degrees above zero. On average, Mattoon has 14 sunny, 9 rainy, 6 partly cloudy, and 2 cloudy days in August. The rains are usually heavy.

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