5-day weather forecast for Mercer Island, Washington

Weather changeability for Seattle, Washington

Temperature Last Month Last Year
Average change in high temperature day-to-day 6.2° 3.9°
Average change in low temperature day-to-day 4.2° 3.9°
Precipitation Last Month Last Year
Chance of dry day after a precip day 10% 29%
Chance of precip day after a dry day 12% 24%
 
 

Weather forecast accuracy for Seattle, Washington

Last Month
Foreca   86.41%
The Weather Channel   84.88%
Weather Underground   84.26%
AccuWeather   83.64%
NWS Digital Forecast   81.48%
World Weather Online   78.70%
Dark Sky (forecast.io)   75.62%
MeteoGroup   75.31%
Persistence   55.25%
Last Year
The Weather Channel   83.49%
Weather Underground   82.88%
AccuWeather   81.46%
Foreca   79.70%
Dark Sky (forecast.io)   78.15%
MeteoGroup   78.12%
NWS Digital Forecast   75.66%
World Weather Online   66.96%
Persistence   57.23%
 

ForecastAdvisor Fact

16.0% of AccuWeather's high temperature forecasts for Seattle were exactly right last month.