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 8.3° 6.9°
Average change in low temperature day-to-day 7.5° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 63% 64%
Chance of precip day after a dry day 36% 31%

Weather forecast accuracy for Portland, Maine

Last Month
Weather Underground   75.97%
The Weather Channel   75.96%
MeteoGroup   74.04%
Foreca   71.15%
AccuWeather   66.99%
Dark Sky (forecast.io)   62.18%
NWS Digital Forecast   60.56%
World Weather Online   57.37%
Persistence   34.96%
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 81% of the time in Portland last year when Foreca's text forecasts called for precipitation, and 18% of the time when they did not.