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 10.1° 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 54% 69%
Chance of precip day after a dry day 39% 33%

Weather forecast accuracy for Portland, Maine

Last Month
MeteoGroup   73.06%
Weather Underground   71.11%
The Weather Channel   69.72%
NWS Digital Forecast   68.06%
Foreca   67.78%
AccuWeather   67.22%
Dark Sky (forecast.io)   63.89%
World Weather Online   58.33%
Persistence   42.20%
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

62.9% of MeteoGroup's high temperature forecasts for Portland were within 3 degrees of actual temperatures last year.