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 6.2° 6.2°
Average change in low temperature day-to-day 8.1° 6.8°
Precipitation Last Month Last Year
Chance of dry day after a precip day 50% 51%
Chance of precip day after a dry day 43% 28%
 
 

Weather forecast accuracy for Portland, Maine

Last Month
The Weather Channel   73.81%
Weather Underground   73.51%
WeatherBug   72.92%
MeteoGroup   72.62%
National Weather Service   71.43%
Foreca   69.35%
AccuWeather   69.05%
CustomWeather   65.48%
Dark Sky (forecast.io)   63.39%
Persistence   37.20%
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

8.3% of CustomWeather's low temperature forecasts for Portland were off by more than 10 degrees last month.