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 7.0° 6.5°
Average change in low temperature day-to-day 4.5° 7.2°
Precipitation Last Month Last Year
Chance of dry day after a precip day 67% 69%
Chance of precip day after a dry day 23% 33%

Weather forecast accuracy for Portland, Maine

Last Month
The Weather Channel   76.88%
Weather Underground   76.34%
Foreca   74.73%
MeteoGroup   73.92%
AccuWeather   72.31%
Dark Sky (forecast.io)   67.74%
NWS Digital Forecast   67.47%
World Weather Online   60.48%
Persistence   45.43%
Last Year
Weather Underground   74.90%
The Weather Channel   74.86%
AccuWeather   73.47%
MeteoGroup   71.90%
Foreca   71.03%
NWS Digital Forecast   66.30%
Dark Sky (forecast.io)   65.35%
World Weather Online   60.59%
Persistence   41.61%

ForecastAdvisor Fact

59.8% of MeteoGroup's low temperature forecasts for Portland were within 3 degrees of actual temperatures last year.