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 3.7° 6.2°
Average change in low temperature day-to-day 5.0° 6.8°
Precipitation Last Month Last Year
Chance of dry day after a precip day 62% 51%
Chance of precip day after a dry day 43% 28%
 
 

Weather forecast accuracy for Portland, Maine

Last Month
AccuWeather   83.91%
Weather Underground   79.60%
The Weather Channel   79.02%
MeteoGroup   78.16%
National Weather Service   76.15%
CustomWeather   75.29%
WeatherBug   74.70%
Foreca   72.99%
Dark Sky (forecast.io)   66.38%
Persistence   45.99%
Last Year
The Weather Channel   74.78%
MeteoGroup   73.62%
Foreca   72.49%
National Weather Service   70.81%
AccuWeather   70.18%
Weather Underground   69.70%
CustomWeather   67.65%
WeatherBug   67.34%
Persistence   43.90%
 

ForecastAdvisor Fact

On average, AccuWeather's high temperature forecasts for Portland were off by 2.22 degrees last month.