Nearby locations
Mercer Island, Washington, United States
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Weather in Mercer Island, United States

21°
Clear
Feels like 21°
·
High24°Low15°
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Air quality

Full Details
0
25
500
Air quality:Good

Pollen index

Full Details
Tree
0/5
012345
Weed
0/5
012345
Grass
0/5
012345

Tomorrow's weather summary

The weather in Mercer Island on Saturday, July 25th, will be cloudy throughout the day, together with some clouds around noon.

There's seems to be also high probability of many clouds during the evening around 6 pm.

Weather information for Mercer Island, on Saturday, July 25th:

The highest temperature during the day is going to be 22°C at about 6 pm. The day will have high relative humidity, with average humidity of 69%, ranging from 50% to a maximum value of 82% at about 6 am. The wind will be breezy, and will get up to 18 km/h at noon, blowing from the south-west. The cloud coverage will range from 1% around midnight to as high as 100% around 4 pm with an average of 75%.

There is no probability for any precipitation throughout the day. The dew point will range from 11°C up to a maximum value of 14°C around 11 pm.

The visibility is expected to be good with average visibility of 16 km throughout the day. Atmospheric pressure will be normal with average pressure of 1015 hPa. Sunrise will be at 5:37 am, and sunset at 8:52 pm. The day will have 15 hours and 15 minutes of daylight.

Air quality forecast for Mercer Island, on Saturday, July 25th:

On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 18 and 32.

Pollen forecast for Mercer Island, on Saturday, July 25th:

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

The weather in Mercer Island on Sunday, July 26th, will be cloudy for most of the day, together with drizzle in the early morning.

There is also a chance for many clouds before dawn around 2 am.

Weather details for Mercer Island, on Sunday, July 26th:

The maximum temperature of the day is going to be 21°C around 6 pm. The day will have very high relative humidity, with average humidity of 76%, ranging from 61% to a maximum value of 89% at about 7 am. The wind will be light, and will get up to 12 km/h at 10 am, blowing from the south-west. The cloud coverage will range from 31% around 11 pm to as high as 100% around 9 pm with an average of 94%.

The chances of precipitation throughout the day will change between 0% and 30%. The highest chance for precipitation will be around 8 am and the lowest probability around midnight. The dew point will range from 12°C up to a maximum value of 15°C around 11 pm.

The visibility is expected to be good with average visibility of 14 km throughout the day. Atmospheric pressure will be normal with average pressure of 1018 hPa. Sunrise will be at 5:38 am, and sunset at 8:51 pm. The day will have 15 hours and 13 minutes of daylight.

Air quality forecast for Mercer Island, on Sunday, July 26th:

On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 19 and 25.

Pollen forecast for Mercer Island, on Sunday, July 26th:

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

FAQ

How warm does it get in Mercer Island?
The average annual highest temperature in Mercer Island is 27.3°C (81.1°F), and the July 26th is the hottest day on average.
How cold does it get in Mercer Island?
The average annual lowest temperature in Mercer Island is 0.6°C (33.1°F), and the December 31st is the coldest day on average.
Which month has the most rain in Mercer Island?
The wettest months in Mercer Island are November and March.
What months does it snow in Mercer Island?
The most common time of year for snow is February.