Mercer Island Weather Conditions
Current Temperature Level

4 °C

Chilly

ClearFeels Like 4°CHumidity 97%

28 AQI

PM2.5 : 5PM10 : 9

Air quality index is: Good

Last Updated: 2025-10-28 03:45 (Local Time)

Map

Mercer Island

Mercer Island Weather Parameters

Wind Speed

4 km/h

Light breeze

Gust Speed

2 m/s

Direction

35° NE

Cloud Cover

0 %

Visibility

16 km

Precipitation

0 mm

Pressure

1020

1021

1022

1023

1024

1025

1026

1027

1028

1029

1030

1031

1026 mb

High

940956

981

1005

Moderate

1013

1030

1046+

UV Index

UV Index0

Low

Suggestions for

TodayMercer Island

28 Oct.

Umbrella• Suggested

Clothing• More Layered

Driving• Enjoy Driving

Sunscreen• Apply

Mercer Island 10-Days Weather Forecast

See Monthly

Today

9°C

70 %

Wednesday

10°C

83 %

Thursday

9°C

83 %

Friday

7°C

80 %

Saturday

11°C

90 %

Sunday

9°C

78 %

Monday

7°C

76 %

Tuesday

7°C

90 %

Wednesday

9°C

88 %

Thursday

10°C

85 %

Today28 Oct

Patchy rain nearby

Occasional light rain is expected and humidity will be 70%, with winds at 8.6 km/h.

13°C / 5°C

Humi.70 %

Prec.2.79 mm

Sunrise

07:48 AM

10hrs 9min

Sunset

05:57 PM

Temperature (°C)

12 AMTime11 PM

Time

Condition

Temp

Humidity

Wind Speed & Dir.

12 AM

Clear

6 °C

82 %

3.6 kmph / NE

Feels 3.8 °C

Cover 0 %

Visibility 10 km

1 AM

Clear

5 °C

82 %

4.3 kmph / NNE

Feels 3.1 °C

Cover 0 %

Visibility 10 km

2 AM

Clear

5 °C

80 %

4.3 kmph / NNE

Feels 2.7 °C

Cover 0 %

Visibility 10 km

3 AM

Clear

4 °C

97 %

4.3 kmph / NE

Feels 2.5 °C

Cover 0 %

Visibility 16 km

4 AM

Clear

5 °C

77 %

5 kmph / NE

Feels 2.4 °C

Cover 0 %

Visibility 10 km

5 AM

Clear

5 °C

74 %

4 kmph / NE

Feels 3.2 °C

Cover 0 %

Visibility 10 km

6 AM

Clear

6 °C

63 %

4.7 kmph / NE

Feels 3.6 °C

Cover 0 %

Visibility 10 km

7 AM

Clear

6 °C

57 %

3.2 kmph / NE

Feels 3.9 °C

Cover 0 %

Visibility 10 km

8 AM

Sunny

6 °C

64 %

2.9 kmph / ESE

Feels 5.5 °C

Cover 0 %

Visibility 10 km

9 AM

Sunny

7 °C

58 %

0.1

2.5 kmph / SSE

Feels 5.6 °C

Cover 0 %

Visibility 10 km

10 AM

Patchy rain nearby

9 °C

64 %

0.3

1.8 kmph / ESE

Feels 8.6 °C

Cover 83 %

Visibility 10 km

11 AM

Sunny

11 °C

60 %

0.2

4 kmph / E

Feels 10.5 °C

Cover 0 %

Visibility 10 km

12 PM

Sunny

12 °C

60 %

0.2

2.5 kmph / SSE

Feels 12.1 °C

Cover 0 %

Visibility 10 km

1 PM

Patchy rain nearby

13 °C

66 %

0.3

2.2 kmph / SE

Feels 12.7 °C

Cover 84 %

Visibility 10 km

2 PM

Sunny

13 °C

66 %

0.3

5 kmph / SE

Feels 12.5 °C

Cover 0 %

Visibility 10 km

3 PM

Patchy rain nearby

13 °C

71 %

0.2

5.8 kmph / SE

Feels 12.6 °C

Cover 80 %

Visibility 10 km

4 PM

Patchy rain nearby

12 °C

70 %

0.1

4 kmph / S

Feels 11 °C

Cover 83 %

Visibility 10 km

5 PM

Overcast

11 °C

65 %

1.8 kmph / S

Feels 9.4 °C

Cover 96 %

Visibility 10 km

6 PM

Overcast

11 °C

76 %

2.5 kmph / SSE

Feels 9.1 °C

Cover 100 %

Visibility 10 km

7 PM

Overcast

11 °C

69 %

7.9 kmph / ESE

Feels 9 °C

Cover 100 %

Visibility 10 km

8 PM

Overcast

11 °C

66 %

5.8 kmph / SW

Feels 9.2 °C

Cover 100 %

Visibility 10 km

9 PM

Thundery outbreaks in nearby

11 °C

67 %

6.1 kmph / SSE

Feels 9.3 °C

Cover 100 %

Visibility 2 km

10 PM

Thundery outbreaks in nearby

9 °C

71 %

8.6 kmph / SE

Feels 7.5 °C

Cover 100 %

Visibility 9 km

11 PM

Moderate rain

9 °C

92 %

7.9 kmph / S

Feels 7.3 °C

Cover 100 %

Visibility 7 km

Today

9°C

70 %

Wednesday

10°C

83 %

Thursday

9°C

83 %

Friday

7°C

80 %

Saturday

11°C

90 %

Sunday

9°C

78 %

Monday

7°C

76 %

Tuesday

7°C

90 %

Wednesday

9°C

88 %

Thursday

10°C

85 %

Temp5 °C

ConditionClear

Humidity77 %

Feels2.4 °C

Cover0 %

Visibility10 km

Wind Speed & Dir.5 kmph / NE

UV0

Mercer Island 30-Days (October 2025) Weather Forecast

See Hourly

Sun.

Mon.

Tue.

Wed.

Thu.

Fri.

Sat.

1Wed.

20°12 °C

2Thu.

21°12 °C

3Fri.

18°10 °C

4Sat.

17°11 °C

5Sun.

19°9 °C

6Mon.

21°7 °C

7Tue.

23°8 °C

8Wed.

17°10 °C

9Thu.

18°9 °C

10Fri.

18°9 °C

11Sat.

16°9 °C

12Sun.

14°7 °C

13Mon.

13°6 °C

14Tue.

16°4 °C

15Wed.

16°4 °C

16Thu.

14°4 °C

17Fri.

16°10 °C

18Sat.

14°7 °C

19Sun.

17°8 °C

20Mon.

16°8 °C

21Tue.

17°7 °C

22Wed.

16°6 °C

23Thu.

17°10 °C

24Fri.

17°9 °C

25Sat.

14°7 °C

26Sun.

10°7 °C

27Mon.

12°5 °C

28Today

13°5 °C

29Wed.

13°9 °C

30Thu.

14°6 °C

31Fri.

10°5 °C

OctoberWeather Overview

No. of days:

Sunny

Cloudy

Rainy

Snowy

The monthly weather averages in Mercer Island consist of 15 sunny days, 1 cloudy days, 12 rainy days, and 0 snowy days.

Mercer Island's Locations Weather Conditions

Locations

Temp

Condition

Humi.

Wind Speed & Direction

Beacon Hill

4 °C

Clear

97%

4.3 kmph / NE

United States's Hottest Cities - October 2025

Hottest

Coldest

RankCityTemperatureWeather ConditionHumidityUVWind Speed & Dir.

Tamuning, United States

28 °C

Patchy rain nearby

79%

19.8 kmph / E

Honolulu, United States

26 °C

Partly Cloudy

65%

21.6 kmph / ENE

Pearl City, United States

26 °C

Patchy rain nearby

65%

13 kmph / ENE

Corpus Christi, United States

26 °C

Clear

85%

23 kmph / S

Homestead, United States

25 °C

Clear

91%

10.1 kmph / NNW

Cooper City, United States

25 °C

Clear

85%

9.4 kmph / NNW

Miami, United States

25 °C

Clear

88%

8.3 kmph / NNW

Southwest Ranches, United States

25 °C

Clear

85%

9 kmph / NNW

Key Biscayne, United States

25 °C

Clear

88%

13.3 kmph / NNW

10.

Kihei, United States

25 °C

Partly Cloudy

65%

14 kmph / ENE

Last Updated: 28 Oct 2025, 11:08 AM

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Mercer Island Weather ConditionsCurrent Temperature Level

Mercer Island Weather Parameters

Mercer Island 10-Days Weather Forecast

Mercer Island 30-Days (October 2025) Weather Forecast

OctoberWeather Overview

No. of days:

Mercer Island's Locations Weather Conditions

United States's Hottest Cities - October 2025

Prana sense

Weather Station

Mercer Island Weather Conditions
Current Temperature Level