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 6.7° 6.9°
Average change in low temperature day-to-day 10.7° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 50% 64%
Chance of precip day after a dry day 25% 31%

Weather forecast accuracy for Portland, Maine

Last Month
The Weather Channel   71.67%
Weather Underground   71.67%
AccuWeather   70.83%
MeteoGroup   69.44%
Foreca   66.11%
NWS Digital Forecast   65.38%
Dark Sky (forecast.io)   65.28%
World Weather Online   47.78%
Persistence   36.64%
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

It rained or snowed 41% of the time in Portland last month when Persistence's text forecasts called for precipitation, and 38% of the time when they did not.