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 3.7° 3.8°
Average change in low temperature day-to-day 3.5° 3.9°
Precipitation Last Month Last Year
Chance of dry day after a precip day 29% 32%
Chance of precip day after a dry day 38% 26%
 
 

Weather forecast accuracy for Seattle, Washington

Last Month
The Weather Channel   88.89%
Foreca   88.89%
AccuWeather   88.06%
Weather Underground   87.78%
MeteoGroup   83.61%
NWS Digital Forecast   82.22%
Dark Sky   72.50%
World Weather Online   66.11%
Persistence   58.89%
Last Year
Foreca   83.63%
AccuWeather   83.59%
The Weather Channel   83.37%
Weather Underground   83.06%
MeteoGroup   82.37%
NWS Digital Forecast   81.38%
Dark Sky   74.46%
World Weather Online   71.13%
Persistence   57.03%
 

ForecastAdvisor Fact

16.9% of MeteoGroup's high temperature forecasts for Seattle were exactly right last year.