Mercer Island Weather Conditions
Current Temperature Level

19 °C

Cool

ClearFeels Like 19° CHumidity 59%

17 AQI

PM2.5 : 3PM10 : 9

Air quality index is: Good

Last Updated: 2025-08-09 01:00 (Local Time)

Map

Mercer Island

Mercer Island Weather Parameters

Wind Speed

5 km/h

Light breeze

Gust Speed

3 m/s

Direction

48° NE

Cloud Cover

0 %

Visibility

16 km

Precipitation

0 mm

Pressure

1020

1021

1022

1023

1024

1025

1026

1027

1028

1029

1030

1031

1021 mb

High

940956

981

1005

Moderate

1013

1030

1046+

UV Index

UV Index0

Low

Suggestions for

TodayMercer Island

9 Aug.

Umbrella• Optional

Clothing• Layering Must

Driving• Enjoy Driving

Sunscreen• Apply

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Mercer Island 10-Days Weather Forecast

See Monthly

Today

19°C

67 %

Sunday

22°C

70 %

Monday

23°C

68 %

Tuesday

21°C

66 %

Wednesday

19°C

69 %

Thursday

17°C

75 %

Friday

16°C

79 %

Saturday

15°C

88 %

Sunday

18°C

72 %

Monday

17°C

62 %

Today9 Aug

Sunny

Clear Sky with temperature at 19 °C and humidity will be at 67% with 11.5 km/h winds.

26°C / 14°C

Humi.67 %

Prec.0 mm

Sunrise

05:58 AM

14hrs 33min

Sunset

08:31 PM

Temperature (°C)

12 AMTime11 PM

Time

Condition

Temp

Humidity

Wind Speed & Dir.

12 AM

Clear

17 °C

74 %

6.1 kmph / NNE

Feels 16.6 °C

Cover 2 %

Visibility 10 km

1 AM

Clear

19 °C

59 %

4.7 kmph / NE

Feels 15.9 °C

Cover 0 %

Visibility 16 km

2 AM

Clear

15 °C

80 %

4.3 kmph / NE

Feels 15.6 °C

Cover 18 %

Visibility 10 km

3 AM

Clear

15 °C

82 %

3.6 kmph / ENE

Feels 15.3 °C

Cover 13 %

Visibility 10 km

4 AM

Clear

15 °C

83 %

2.2 kmph / ENE

Feels 15 °C

Cover 22 %

Visibility 10 km

5 AM

Cloudy

14 °C

84 %

1.8 kmph / ENE

Feels 14.6 °C

Cover 80 %

Visibility 10 km

6 AM

Sunny

14 °C

85 %

1.8 kmph / NE

Feels 14.6 °C

Cover 17 %

Visibility 10 km

7 AM

Cloudy

14 °C

86 %

0.2

1.4 kmph / E

Feels 15.1 °C

Cover 72 %

Visibility 10 km

8 AM

Sunny

16 °C

80 %

0.9

1.4 kmph / E

Feels 15.8 °C

Cover 23 %

Visibility 10 km

9 AM

Partly Cloudy

17 °C

72 %

2.1

3.2 kmph / ENE

Feels 17 °C

Cover 51 %

Visibility 10 km

10 AM

Sunny

19 °C

66 %

3.8

2.5 kmph / NNE

Feels 19.4 °C

Cover 2 %

Visibility 10 km

11 AM

Sunny

22 °C

61 %

5.5

4.3 kmph / N

Feels 21.6 °C

Cover 2 %

Visibility 10 km

12 PM

Sunny

23 °C

56 %

6.6

4.7 kmph / N

Feels 24.6 °C

Cover 2 %

Visibility 10 km

1 PM

Sunny

25 °C

53 %

7.2

6.1 kmph / NNW

Feels 25.5 °C

Cover 2 %

Visibility 10 km

2 PM

Sunny

25 °C

51 %

6.5

7.2 kmph / NNW

Feels 26 °C

Cover 2 %

Visibility 10 km

3 PM

Sunny

25 °C

51 %

5.5

9.7 kmph / NNW

Feels 26.2 °C

Cover 4 %

Visibility 10 km

4 PM

Sunny

26 °C

50 %

3.7

11.5 kmph / N

Feels 26.2 °C

Cover 5 %

Visibility 10 km

5 PM

Sunny

25 °C

50 %

2.4

11.5 kmph / N

Feels 25.8 °C

Cover 6 %

Visibility 10 km

6 PM

Sunny

24 °C

54 %

1.2

11.2 kmph / N

Feels 25.4 °C

Cover 3 %

Visibility 10 km

7 PM

Sunny

23 °C

56 %

0.4

10.1 kmph / N

Feels 25 °C

Cover 1 %

Visibility 10 km

8 PM

Sunny

22 °C

58 %

8.6 kmph / N

Feels 21.7 °C

Cover 0 %

Visibility 10 km

9 PM

Clear

21 °C

64 %

7.9 kmph / N

Feels 20.7 °C

Cover 0 %

Visibility 10 km

10 PM

Clear

18 °C

67 %

7.2 kmph / NNE

Feels 18.4 °C

Cover 0 %

Visibility 10 km

11 PM

Clear

18 °C

72 %

6.5 kmph / NNE

Feels 18.2 °C

Cover 5 %

Visibility 10 km

Today

19°C

67 %

Sunday

22°C

70 %

Monday

23°C

68 %

Tuesday

21°C

66 %

Wednesday

19°C

69 %

Thursday

17°C

75 %

Friday

16°C

79 %

Saturday

15°C

88 %

Sunday

18°C

72 %

Monday

17°C

62 %

Temp15 °C

ConditionClear

Humidity80 %

Feels15.6 °C

Cover18 %

Visibility10 km

Wind Speed & Dir.4.3 kmph / NE

UV0

Mercer Island 30-Days (August 2025) Weather Forecast

See Hourly

Sun.

Mon.

Tue.

Wed.

Thu.

Fri.

Sat.

1Fri.

27°17 °C

2Sat.

21°16 °C

3Sun.

20°16 °C

4Mon.

21°16 °C

5Tue.

24°16 °C

6Wed.

23°16 °C

7Thu.

24°14 °C

8Fri.

26°14 °C

9Today

26°14 °C

10Sun.

30°15 °C

11Mon.

31°16 °C

12Tue.

30°15 °C

13Wed.

23°14 °C

14Thu.

25°12 °C

15Fri.

26°12 °C

16Sat.

27°13 °C

17Sun.

27°13 °C

18Mon.

23°14 °C

19Tue.

24°11 °C

20Wed.

24°11 °C

21Thu.

25°11 °C

22Fri.

25°14 °C

23Sat.

25°13 °C

24Sun.

25°13 °C

25Mon.

26°13 °C

26Tue.

25°13 °C

27Wed.

26°13 °C

28Thu.

26°14 °C

29Fri.

24°13 °C

30Sat.

23°13 °C

31Sun.

22°13 °C

AugustWeather Overview

No. of days:

Sunny

Cloudy

Rainy

Snowy

The monthly weather averages in Mercer Island consist of 10 sunny days, 3 cloudy days, 14 rainy days, and 0 snowy days.

Mercer Island's Locations Weather Conditions

Locations

Temp

Condition

Humi.

Wind Speed & Direction

Beacon Hill

19 °C

Clear

59%

4.7 kmph / NE

United States's Hottest Cities - August 2025

Hottest

Coldest

RankCityTemperatureWeather ConditionHumidityUVWind Speed & Dir.

Tempe, United States

37 °C

Clear

34%

19.8 kmph / W

Fountain Hills, United States

37 °C

Clear

34%

20.2 kmph / W

Fort McDowell, United States

37 °C

Clear

34%

20.2 kmph / W

Tolleson, United States

36 °C

Clear

35%

20.2 kmph / WSW

Scottsdale, United States

36 °C

Clear

35%

22.3 kmph / W

Guadalupe, United States

36 °C

Clear

35%

20.2 kmph / WSW

Phoenix, United States

36 °C

Clear

35%

20.2 kmph / WSW

Blythe, United States

36 °C

Clear

42%

10.8 kmph / SSW

Surprise, United States

36 °C

Clear

39%

19.8 kmph / WSW

10.

Sun City, United States

36 °C

Clear

39%

19.8 kmph / WSW

Last Updated: 09 Aug 2025, 08:22 AM

City Weather Rankings

Prana sense

Experience precise, real-time weather monitoring with our Automatic Weather Station, reliable source for accurate meteorological data.

Weather Station

Experience precise, real-time weather monitoring with our Automatic Weather Station, reliable source for accurate meteorological data.

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Mercer Island Weather ConditionsCurrent Temperature Level

Mercer Island Weather Parameters

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Mercer Island 10-Days Weather Forecast

Mercer Island 30-Days (August 2025) Weather Forecast

AugustWeather Overview

No. of days:

Mercer Island's Locations Weather Conditions

United States's Hottest Cities - August 2025

Prana sense

Weather Station

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Mercer Island Weather Conditions
Current Temperature Level