5-day weather forecast for Portland, Maine

Weather changeability for Portland, Maine

Temperature Last Month Last Year
Average change in high temperature day-to-day 5.4° 6.9°
Average change in low temperature day-to-day 9.6° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 71% 64%
Chance of precip day after a dry day 20% 31%

Weather forecast accuracy for Portland, Maine

Last Month
MeteoGroup   80.75%
The Weather Channel   80.17%
Weather Underground   80.17%
AccuWeather   78.74%
Foreca   77.59%
NWS Digital Forecast   74.14%
Dark Sky (forecast.io)   71.84%
World Weather Online   60.92%
Persistence   45.74%
Last Year
The Weather Channel   74.62%
Weather Underground   74.62%
MeteoGroup   73.24%
AccuWeather   72.98%
Foreca   72.40%
NWS Digital Forecast   67.40%
Dark Sky (forecast.io)   67.17%
World Weather Online   61.60%
Persistence   41.87%

ForecastAdvisor Fact

On average, World Weather Online's high temperature forecasts for Portland were off by 3.74 degrees last year.