5-day weather forecast for Portland, Oregon

Click on a forecast to see the forecast trend for that day

Weather changeability for Portland, Oregon

Temperature Last Month Last Year
Average change in high temperature day-to-day 3.9° 4.8°
Average change in low temperature day-to-day 5.3° 4.1°
Precipitation Last Month Last Year
Chance of dry day after a precip day 31% 29%
Chance of precip day after a dry day 36% 22%

Weather forecast accuracy for Portland, Oregon

Last Month
AccuWeather   86.39%
Foreca   85.83%
The Weather Channel   83.89%
Weather Underground   82.78%
MeteoGroup   80.83%
NWS Digital Forecast   77.78%
Dark Sky (forecast.io)   74.17%
World Weather Online   69.17%
Persistence   51.67%
Last Year
The Weather Channel   84.45%
Weather Underground   84.38%
AccuWeather   83.47%
NWS Digital Forecast   81.58%
MeteoGroup   81.31%
Foreca   81.08%
Dark Sky (forecast.io)   76.27%
World Weather Online   64.30%
Persistence   57.08%

ForecastAdvisor Fact

3.3% of NWS Digital Forecast's high temperature forecasts for Portland were exactly right last month.