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 4.2° 6.2°
Average change in low temperature day-to-day 9.6° 6.8°
Precipitation Last Month Last Year
Chance of dry day after a precip day 67% 51%
Chance of precip day after a dry day 32% 28%
 
 

Weather forecast accuracy for Portland, Maine

Last Month
The Weather Channel   76.44%
Weather Underground   75.00%
National Weather Service   72.70%
WeatherBug   72.56%
Foreca   71.84%
MeteoGroup   70.11%
AccuWeather   68.97%
Dark Sky (forecast.io)   65.52%
CustomWeather   63.22%
Persistence   45.21%
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

3.4% of Dark Sky (forecast.io)'s high temperature forecasts for Portland were off by more than 10 degrees last month.