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 5.1° 4.9°
Average change in low temperature day-to-day 2.9° 3.6°
Precipitation Last Month Last Year
Chance of dry day after a precip day 11% 28%
Chance of precip day after a dry day 50% 26%

Weather forecast accuracy for Portland, Oregon

Last Month
MeteoGroup   78.62%
Foreca   77.74%
NWS Digital Forecast   76.49%
The Weather Channel   75.33%
Weather Underground   75.33%
Dark Sky (forecast.io)   72.04%
AccuWeather   68.75%
World Weather Online   59.21%
Persistence   55.21%
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

On average, Persistence's high temperature forecasts for Portland were off by 6.53 degrees last year.