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° 5.9°
Average change in low temperature day-to-day 8.1° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 50% 57%
Chance of precip day after a dry day 43% 32%
 
 

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
Weather Underground   75.59%
The Weather Channel   75.57%
MeteoGroup   74.60%
Foreca   73.03%
National Weather Service   72.21%
AccuWeather   70.89%
WeatherBug   70.62%
CustomWeather   66.95%
Persistence   41.58%
 

ForecastAdvisor Fact

3.8% of WeatherBug's high temperature forecasts for Portland were off by more than 10 degrees last year.