Mercer Island, WA Monthly Weather

Altitude - 92m | 47°34′16″N,122°13′19″W | map (OSM)

Mercer Island, WA

°F

4 pmCloudy9mphS

Sun, September 14, 20254:49 PM (GMT -07:00)

September

Sun Sep 14 63 °F low58 °F	Mon Sep 15 68 °F low54 °F	Tue Sep 16 85 °F low56 °F	Wed Sep 17 72 °F low58 °F	Thu Sep 18 68 °F low54 °F	Fri Sep 19 73 °F low53 °F	Sat Sep 20 71 °F low55 °F
Sun Sep 21 67 °F low57 °F	Mon Sep 22 68 °F low57 °F	Tue Sep 23 68 °F low56 °F	Wed Sep 24 65 °F low56 °F	Thu Sep 25 65 °F low56 °F	Fri Sep 26 64 °F low55 °F	Sat Sep 27 64 °F low54 °F

Last updated 15min ago

Temperature in Mercer Island, WA for month

* Mercer Island, WA Monthly weather is based on statistical data for the last 10 years. It is intended for personal use on an "as is" basis. This page provides the weather forecast for the next 30 days. In this forecast option you can see precipitation icons and maximum air temperature. The first 14 days reflect the current weather forecast for Mercer Island, WA, and the following days reflect the weather based on statistical data from the last few years of measurements. This weather forecast will be useful for a general understanding of weather changes the nearest month for Mercer Island, WA. Please note that long-term forecasts are not a forecast as such, but only reflect the statistics of past years.