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° 6.3°
Average change in low temperature day-to-day 10.0° 7.3°
Precipitation Last Month Last Year
Chance of dry day after a precip day 32% 57%
Chance of precip day after a dry day 45% 27%

Weather forecast accuracy for Portland, Maine

Last Month
The Weather Channel   80.28%
NWS Digital Forecast   79.44%
Weather Underground   78.45%
AccuWeather   78.33%
Foreca   77.78%
MeteoGroup   77.50%
Dark Sky (forecast.io)   76.67%
World Weather Online   63.06%
Persistence   36.94%
Last Year
Weather Underground   79.73%
The Weather Channel   79.65%
MeteoGroup   77.16%
AccuWeather   76.67%
Foreca   76.43%
NWS Digital Forecast   70.66%
Dark Sky (forecast.io)   67.59%
World Weather Online   60.72%
Persistence   43.37%

ForecastAdvisor Fact

It rained or snowed 90% of the time in Portland last month when World Weather Online's text forecasts called for precipitation, and 21% of the time when they did not.