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 7.8° 4.9°
Average change in low temperature day-to-day 4.4° 4.9°
Precipitation Last Month Last Year
Chance of dry day after a precip day 27% 27%
Chance of precip day after a dry day 17% 24%

Weather forecast accuracy for Portland, Oregon

Last Month
AccuWeather   87.65%
Weather Underground   86.86%
Foreca   86.73%
The Weather Channel   86.42%
NWS Digital Forecast   81.17%
Dark Sky (forecast.io)   77.16%
MeteoGroup   68.52%
World Weather Online   66.05%
Persistence   49.71%
Last Year
The Weather Channel   80.31%
AccuWeather   80.26%
Weather Underground   80.14%
Foreca   79.46%
Dark Sky (forecast.io)   76.43%
NWS Digital Forecast   75.76%
MeteoGroup   70.32%
World Weather Online   65.36%
Persistence   52.72%

ForecastAdvisor Fact

2.9% of Dark Sky (forecast.io)'s low temperature forecasts for Portland were off by more than 10 degrees last year.