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 7.9° 4.9°
Average change in low temperature day-to-day 4.3° 3.6°
Precipitation Last Month Last Year
Chance of dry day after a precip day 20% 28%
Chance of precip day after a dry day 11% 26%

Weather forecast accuracy for Portland, Oregon

Last Month
The Weather Channel   91.36%
Weather Underground   91.36%
AccuWeather   85.49%
Foreca   85.26%
NWS Digital Forecast   80.25%
MeteoGroup   80.25%
Dark Sky (forecast.io)   79.01%
World Weather Online   72.53%
Persistence   54.02%
Last Year
AccuWeather   83.70%
Weather Underground   83.43%
The Weather Channel   83.05%
Foreca   80.23%
MeteoGroup   80.06%
NWS Digital Forecast   78.56%
Dark Sky (forecast.io)   78.47%
World Weather Online   67.45%
Persistence   55.71%

ForecastAdvisor Fact

18.4% of Persistence's low temperature forecasts for Portland were off by more than 10 degrees last month.