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August weather forecast in Lewiston

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

	704 mmHg		38%
	3.8 m/s

27 July, Sunday. day, 32°; night, 16°; clear

28 July, mon

	705 mmHg		37%
	3.9 m/s

28 July, Monday. day, 33°; night, 16°; clear

29 July, tue

	705 mmHg		36%
	4 m/s

29 July, Tuesday. day, 33°; night, 17°; clear

30 July, wed

	705 mmHg		38%
	4 m/s

30 July, Wednesday. day, 32°; night, 17°; clear

31 July, thu

	704 mmHg		38%
	3.9 m/s

31 July, Thursday. day, 32°; night, 16°; clear

1 August, fri

	705 mmHg		37%
	3.8 m/s

1 August, Friday. day, 33°; night, 16°; clear

2 August, sat

	705 mmHg		38%
	4.19 m/s

2 August, Saturday. day, 32°; night, 17°; clear

3 August, sun

	705 mmHg		38%
	4 m/s

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

4 August, mon

	704 mmHg		38%
	3.9 m/s

4 August, Monday. day, 32°; night, 16°; clear

5 August, tue

	704 mmHg		38%
	3.8 m/s

5 August, Tuesday. day, 32°; night, 16°; clear

6 August, wed

	704 mmHg		38%
	3.9 m/s

6 August, Wednesday. day, 31°; night, 17°; partly cloudy

7 August, thu

	704 mmHg		42%
	4.1 m/s

7 August, Thursday. day, 31°; night, 15°; clear

8 August, fri

	704 mmHg		41%
	4 m/s

8 August, Friday. day, 31°; night, 15°; clear

9 August, sat

	704 mmHg		41%
	3.5 m/s

9 August, Saturday. day, 31°; night, 15°; clear

10 August, sun

	704 mmHg		40%
	4 m/s

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

11 August, mon

	704 mmHg		41%
	4 m/s

11 August, Monday. day, 31°; night, 16°; clear

12 August, tue

	705 mmHg		39%
	3.9 m/s

12 August, Tuesday. day, 31°; night, 15°; clear

13 August, wed

	705 mmHg		40%
	3.7 m/s

13 August, Wednesday. day, 30°; night, 15°; partly cloudy

14 August, thu

	705 mmHg		39%
	3.8 m/s

14 August, Thursday. day, 31°; night, 15°; clear

15 August, fri

	704 mmHg		38%
	3.9 m/s

15 August, Friday. day, 31°; night, 16°; clear

16 August, sat

	704 mmHg		38%
	3.8 m/s

16 August, Saturday. day, 31°; night, 15°; clear

17 August, sun

	704 mmHg		39%
	3.9 m/s

17 August, Sunday. day, 31°; night, 15°; clear

18 August, mon

	704 mmHg		39%
	4.1 m/s

18 August, Monday. day, 31°; night, 15°; clear

19 August, tue

	704 mmHg		40%
	4.1 m/s

19 August, Tuesday. day, 30°; night, 15°; clear

20 August, wed

	703 mmHg		39%
	3.9 m/s

20 August, Wednesday. day, 30°; night, 15°; partly cloudy

21 August, thu

	703 mmHg		42%
	4.4 m/s

21 August, Thursday. day, 30°; night, 15°; rain

22 August, fri

	704 mmHg		44%
	4.19 m/s

22 August, Friday. day, 29°; night, 15°; partly cloudy

23 August, sat

	704 mmHg		46%
	4.1 m/s

23 August, Saturday. day, 28°; night, 13°; rain

24 August, sun

	704 mmHg		46%
	3.9 m/s

24 August, Sunday. day, 28°; night, 14°; rain

25 August, mon

	704 mmHg		44%
	4 m/s

25 August, Monday. day, 28°; night, 13°; clear

26 August, tue

	704 mmHg		43%
	4 m/s

26 August, Tuesday. day, 29°; night, 14°; clear

27 August, wed

	704 mmHg		42%
	4.4 m/s

27 August, Wednesday. day, 29°; night, 14°; clear

28 August, thu

	705 mmHg		42%
	4.1 m/s

28 August, Thursday. day, 29°; night, 13°; clear

29 August, fri

	704 mmHg		42%
	4.19 m/s

29 August, Friday. day, 30°; night, 14°; clear

30 August, sat

	703 mmHg		44%
	4.5 m/s

30 August, Saturday. day, 29°; night, 14°; clear

31 August, sun

	704 mmHg		45%
	4.3 m/s

31 August, Sunday. day, 27°; night, 13°; partly cloudy

1 September, mon

	704 mmHg		45%
	4.19 m/s

1 September, Monday. day, 28°; night, 13°; clear

2 September, tue

	704 mmHg		44%
	4.1 m/s

2 September, Tuesday. day, 28°; night, 13°; clear

3 September, wed

	704 mmHg		44%
	3.9 m/s

3 September, Wednesday. day, 28°; night, 13°; clear

4 September, thu

	704 mmHg		45%
	3.8 m/s

4 September, Thursday. day, 27°; night, 12°; clear

5 September, fri

	704 mmHg		44%
	4.1 m/s

5 September, Friday. day, 27°; night, 13°; clear

6 September, sat

	705 mmHg		46%
	3.9 m/s

6 September, Saturday. day, 27°; night, 12°; clear

Average data for 10 years

Lewiston August

23

sunny days

3

days with precipitation

5

cloudy days

23 sunny days; 3 days with precipitation; 5 cloudy days;

41

%

air humidity

2.2

m/s

WindSW

12

mm of precipitation

(3% of annual average)

air humidity 41%; 12 millimeters of precipitation (3% of annual average); Wind south-westerly 2.2 Meters per second

Weather graphs for August

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

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

SW

SW

SW

S

SW

SW

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

Moscow
Boise
Missoula
Leavenworth
Spokane
Moses Lake
Richland
Yakima
John Day

Cities with similar weather in August

Suhum
Istanbul
Burgas
Varna
Florence
The Sunny Beach
Tiraspol
Comrat
Bender

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

In August, the weather in Lewiston is typically hot. Average daily high temperature in August is about 30 degrees above zero. On average, Lewiston has 23 sunny, 5 partly cloudy, and 3 rainy days in August. The rains are usually light.

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