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August weather forecast in Grass Valley

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

	741 mmHg		39%
	3.4 m/s

27 July, Sunday. day, 35°; night, 18°; clear

28 July, mon

	741 mmHg		39%
	3.3 m/s

28 July, Monday. day, 35°; night, 18°; clear

29 July, tue

	741 mmHg		41%
	3.4 m/s

29 July, Tuesday. day, 35°; night, 18°; clear

30 July, wed

	741 mmHg		43%
	3.3 m/s

30 July, Wednesday. day, 34°; night, 17°; clear

31 July, thu

	741 mmHg		41%
	3.4 m/s

31 July, Thursday. day, 34°; night, 18°; clear

1 August, fri

	741 mmHg		42%
	3.4 m/s

1 August, Friday. day, 34°; night, 18°; partly cloudy

2 August, sat

	741 mmHg		41%
	3.1 m/s

2 August, Saturday. day, 34°; night, 17°; clear

3 August, sun

	741 mmHg		40%
	3.2 m/s

3 August, Sunday. day, 34°; night, 17°; clear

4 August, mon

	741 mmHg		42%
	3.4 m/s

4 August, Monday. day, 34°; night, 17°; clear

5 August, tue

	741 mmHg		45%
	3.7 m/s

5 August, Tuesday. day, 33°; night, 17°; clear

6 August, wed

	741 mmHg		46%
	3.5 m/s

6 August, Wednesday. day, 32°; night, 17°; partly cloudy

7 August, thu

	741 mmHg		44%
	3.3 m/s

7 August, Thursday. day, 33°; night, 17°; clear

8 August, fri

	741 mmHg		44%
	3.3 m/s

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

9 August, sat

	741 mmHg		43%
	3.2 m/s

9 August, Saturday. day, 33°; night, 17°; clear

10 August, sun

	741 mmHg		42%
	3.3 m/s

10 August, Sunday. day, 33°; night, 17°; clear

11 August, mon

	741 mmHg		41%
	3.4 m/s

11 August, Monday. day, 34°; night, 17°; clear

12 August, tue

	741 mmHg		41%
	3.2 m/s

12 August, Tuesday. day, 34°; night, 17°; clear

13 August, wed

	741 mmHg		40%
	3.1 m/s

13 August, Wednesday. day, 34°; night, 17°; clear

14 August, thu

	741 mmHg		40%
	3.2 m/s

14 August, Thursday. day, 34°; night, 18°; clear

15 August, fri

	741 mmHg		40%
	3.3 m/s

15 August, Friday. day, 34°; night, 17°; clear

16 August, sat

	741 mmHg		40%
	3.2 m/s

16 August, Saturday. day, 34°; night, 18°; clear

17 August, sun

	741 mmHg		39%
	3.5 m/s

17 August, Sunday. day, 34°; night, 18°; clear

18 August, mon

	740 mmHg		42%
	3.5 m/s

18 August, Monday. day, 33°; night, 17°; clear

19 August, tue

	740 mmHg		43%
	3.3 m/s

19 August, Tuesday. day, 33°; night, 17°; clear

20 August, wed

	740 mmHg		45%
	3.2 m/s

20 August, Wednesday. day, 32°; night, 16°; clear

21 August, thu

	740 mmHg		47%
	3.2 m/s

21 August, Thursday. day, 32°; night, 16°; clear

22 August, fri

	741 mmHg		47%
	3.3 m/s

22 August, Friday. day, 32°; night, 17°; clear

23 August, sat

	740 mmHg		47%
	3.2 m/s

23 August, Saturday. day, 32°; night, 16°; clear

24 August, sun

	740 mmHg		45%
	3.3 m/s

24 August, Sunday. day, 32°; night, 16°; clear

25 August, mon

	740 mmHg		43%
	3.2 m/s

25 August, Monday. day, 33°; night, 16°; clear

26 August, tue

	741 mmHg		43%
	3.4 m/s

26 August, Tuesday. day, 33°; night, 16°; clear

27 August, wed

	740 mmHg		41%
	3.4 m/s

27 August, Wednesday. day, 33°; night, 16°; clear

28 August, thu

	740 mmHg		39%
	3.3 m/s

28 August, Thursday. day, 34°; night, 17°; clear

29 August, fri

	740 mmHg		40%
	3.1 m/s

29 August, Friday. day, 34°; night, 17°; clear

30 August, sat

	740 mmHg		41%
	3.3 m/s

30 August, Saturday. day, 33°; night, 17°; clear

31 August, sun

	740 mmHg		39%
	3.4 m/s

31 August, Sunday. day, 33°; night, 16°; clear

1 September, mon

	740 mmHg		40%
	3.5 m/s

1 September, Monday. day, 33°; night, 16°; clear

2 September, tue

	740 mmHg		41%
	3.4 m/s

2 September, Tuesday. day, 33°; night, 16°; rain

3 September, wed

	740 mmHg		41%
	3.1 m/s

3 September, Wednesday. day, 33°; night, 17°; clear

4 September, thu

	740 mmHg		40%
	3.3 m/s

4 September, Thursday. day, 33°; night, 16°; clear

5 September, fri

	740 mmHg		40%
	3.4 m/s

5 September, Friday. day, 33°; night, 16°; clear

6 September, sat

	741 mmHg		38%
	3.2 m/s

6 September, Saturday. day, 33°; night, 16°; clear

Average data for 10 years

Grass Valley August

29

sunny days

0

days with precipitation

2

cloudy days

29 sunny days; 0 days with precipitation; 2 cloudy days;

42

%

air humidity

2.09

m/s

WindS

3

mm of precipitation

(1% of annual average)

air humidity 42%; 3 millimeters of precipitation (1% of annual average); Wind southerly 2.09 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

S

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S

S

S

S

S

S

S

S

S

S

S

S

SE

S

S

S

SE

S

S

S

1

Average data for 10 years

2

3

4

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9

10

11

12

13

14

15

16

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31

Daytime temperature

Night-time temperature

Cities near you

San Francisco
Sacramento
Oakland
Redding
Monterey
San Jose
Reno
Stanford
San Luis Obispo

Cities with similar weather in August

Barcelona
Retimno
Denpasar
Bari
Split
Honolulu
Kuta
Nusa-Dua
Accra

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

In August, the weather in Grass Valley is typically hot. Average daily high temperature in August is about 33 degrees above zero. On average, Grass Valley has 29 sunny and 2 partly cloudy days in August.

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