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 6.2° 5.9°
Average change in low temperature day-to-day 4.0° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 80% 57%
Chance of precip day after a dry day 38% 32%

Weather forecast accuracy for Portland, Maine

Last Month
Weather Underground   79.84%
The Weather Channel   79.57%
MeteoGroup   78.23%
AccuWeather   77.42%
NWS Digital Forecast   75.27%
Foreca   73.33%
Dark Sky (forecast.io)   68.82%
Persistence   45.43%
Last Year
Weather Underground   75.59%
The Weather Channel   75.57%
MeteoGroup   74.60%
Foreca   73.03%
AccuWeather   70.89%
WeatherBug   70.62%
NWS Digital Forecast   67.06%
CustomWeather   66.95%
Persistence   41.58%

ForecastAdvisor Fact

ForecastWatch.com is the largest provider of weather forecast accuracy statistics.