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Mercer Island, WA Weather

Updated: Sat May 24th 2025 2:15 AM PDT

Clear

52^°F 11^°C

Feels Like 53^°F / 12^°C

Mercer Island, WA weather condition is Clear and 52°F.

Today's Weather in Mercer Island,WA

The current weather in Mercer Island WA as of 2:15 AM PDT on Sat May 24th 2025, has a sky condition of Clear with the visibility of 9 mile(s). It is 52 degrees fahrenheit but feels like 53 degrees with a forecasted high of 77 and low of 49. The barometric pressure is 30.12 - measured by inches of mercury - and is rising since its last observation. The humidity is 66 percent that's falling since the last report, with a dew point of 44 degrees fahrenheit which is falling. Wind direction is from the East-Northeast at 2.2 miles per hour, gusting at 3.8 miles per hour. Sunrise is at 5:22 AM and Sunset is at 8:51 PM. The moon phase is a Waning Crescent moon rising at 3:37 AM with 14% illumination. Thank you for listening to the weather report from LocalConditions.com!

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Barometer 30.12 inHg. rising
Humidity 66% falling
Heat Index 51°F
Wind from ENE. 2.2 mph
Wind Gust 3.8 miles per hour
Wind Chill 51°F
UV Index 0

Dew Point 44°F falling
Visibility 9 mi.
Sunrise 5:22 AM
Sunset 8:51 PM
Moonrise 3:37 AM
Moonset 6:16 PM
Moon Phase Waning Crescent Moon 14%

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Radar Alerts Next 48 Hours Traffic

Hourly Forecast - Next 8 hours

5 Day Forecast

Partly Cloudy

Partly Cloudy with a high of 68°F and a low of 54°F. Winds will be light at 10mph at times. The humidity will be on the higher side, reaching around 64%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 68° \| Lo 54°	64%	0%	0%	9.8 mph

Cloudy

Cloudy with a high of 63°F and a low of 55°F. Winds will be moderate, blowing around 13mph. The humidity will be on the higher side, reaching around 71%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 63° \| Lo 55°	71%	0%	0%	12.1 mph

Sunny

Sunny with a high of 73°F and a low of 47°F. Winds will be light at 9mph at times. Humidity levels are comfortable, sitting around 52%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 73° \| Lo 47°	52%	0%	0%	8.1 mph

Sunny

Sunny with a high of 82°F and a low of 49°F. Winds will be light at 6mph at times. Humidity levels are comfortable, sitting around 60%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 82° \| Lo 49°	60%	0%	0%	6 mph

Cloudy

Cloudy with a high of 72°F and a low of 53°F. Winds will be moderate, blowing around 11mph. The humidity will be on the higher side, reaching around 63%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 72° \| Lo 53°	63%	0% \| est. 0in	0%	10.3 mph

Yesterday 5-Day 10-Day

Weather Radar Map

Live Mercer Island, WA weather with granular precipitation, radar, barometric pressure, temperatures and wind speeds for today thru Wednesday, as you toggle through each map layer. Use the slider to move forward and back in time to view how current data and forecasts will affect the region; you can press or click on the map to show metrics available for each tab. The related timestamp is located above the Play button which will animate the weather forecast.

Hourly Temperature

The current temperature today is 52^°F. The morning temperature of 49°^F is lowest at 4am with the daytime high of 76°^F at 4pm and a low around 58°^F at 11pm is expected.