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 8.1° 5.9°
Average change in low temperature day-to-day 5.0° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 63% 57%
Chance of precip day after a dry day 26% 32%
 
 

Weather forecast accuracy for Portland, Maine

Last Month
AccuWeather   75.54%
Weather Underground   75.27%
The Weather Channel   74.46%
Foreca   70.43%
MeteoGroup   69.35%
Dark Sky (forecast.io)   61.56%
NWS Digital Forecast   61.26%
Persistence   44.09%
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

61.3% of Weather Underground's high temperature forecasts for Portland were within 3 degrees of actual temperatures last month.