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 5.4° 6.2°
Average change in low temperature day-to-day 6.4° 6.8°
Precipitation Last Month Last Year
Chance of dry day after a precip day 78% 51%
Chance of precip day after a dry day 29% 28%
 
 

Weather forecast accuracy for Portland, Maine

Last Month
The Weather Channel   79.72%
MeteoGroup   79.44%
Weather Underground   78.33%
Foreca   78.06%
AccuWeather   78.06%
National Weather Service   73.06%
CustomWeather   70.56%
WeatherBug   70.56%
Dark Sky (forecast.io)   69.44%
Persistence   42.22%
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, CustomWeather's high temperature forecasts for Portland were off by 2.61 degrees last month.