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 5.3° 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 17% 26%
Chance of precip day after a dry day 8% 23%

Weather forecast accuracy for Portland, Oregon

Last Month
AccuWeather   83.05%
The Weather Channel   83.05%
Weather Underground   83.05%
Foreca   80.17%
Dark Sky (forecast.io)   80.17%
MeteoGroup   74.43%
NWS Digital Forecast   71.84%
World Weather Online   66.09%
Persistence   60.28%
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

On average, Dark Sky (forecast.io)'s low temperature forecasts for Portland were off by 2.76 degrees last month.