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Mercer Island, Washington, United States

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Weather Radar in Mercer Island, Washington, United States

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FAQ

What are the average monthly temperatures in Mercer Island?

Average temperatures for Mercer Island:

Month	Min Temp	Max Temp
January	3.8°C (38.8°F)	8.1°C (46.6°F)
February	3.8°C (38.8°F)	9.1°C (48.3°F)
March	5.1°C (41.3°F)	11.8°C (53.3°F)
April	7.0°C (44.5°F)	14.6°C (58.3°F)
May	10.0°C (50.1°F)	18.6°C (65.4°F)
June	12.6°C (54.6°F)	21.3°C (70.3°F)
July	14.6°C (58.4°F)	25.0°C (77.0°F)
August	14.7°C (58.5°F)	24.9°C (76.9°F)
September	12.5°C (54.5°F)	21.2°C (70.2°F)
October	8.9°C (48.0°F)	15.4°C (59.8°F)
November	5.6°C (42.1°F)	10.4°C (50.7°F)
December	3.1°C (37.7°F)	7.2°C (44.9°F)

How much rain does Mercer Island get?

The average annual rainfall for Mercer Island is 1292mm (51").

How much snow does Mercer Island get?

The average annual snowfall for Mercer Island is 33mm (1").