5-day weather forecast for Portland, Oregon

Weather changeability for Portland, Oregon

Temperature Last Month Last Year
Average change in high temperature day-to-day 7.7° 4.6°
Average change in low temperature day-to-day 4.7° 4.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 23% 26%
Chance of precip day after a dry day 17% 23%

Weather forecast accuracy for Portland, Oregon

Last Month
The Weather Channel   90.77%
Weather Underground   90.77%
Foreca   85.42%
AccuWeather   83.04%
Dark Sky (forecast.io)   82.14%
NWS Digital Forecast   81.17%
MeteoGroup   75.30%
World Weather Online   64.20%
Persistence   52.15%
Last Year
The Weather Channel   80.52%
Weather Underground   80.43%
AccuWeather   80.06%
Foreca   79.07%
MeteoGroup   75.56%
NWS Digital Forecast   74.88%
Dark Sky (forecast.io)   73.99%
World Weather Online   65.36%
Persistence   54.88%

ForecastAdvisor Fact

5.7% of Persistence's low temperature forecasts for Portland were exactly right last year.