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 6.6° 5.9°
Average change in low temperature day-to-day 6.0° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 88% 57%
Chance of precip day after a dry day 35% 32%
 
 

Weather forecast accuracy for Portland, Maine

Last Month
Weather Underground   71.26%
The Weather Channel   71.26%
AccuWeather   68.39%
Foreca   66.38%
MeteoGroup   65.23%
Dark Sky (forecast.io)   61.21%
NWS Digital Forecast   55.36%
Persistence   42.86%
Last Year
Weather Underground   75.59%
The Weather Channel   75.57%
MeteoGroup   74.60%
Foreca   73.03%
AccuWeather   70.89%
WeatherBug   70.62%
NWS Digital Forecast   67.06%
CustomWeather   66.95%
Persistence   41.58%
 

ForecastAdvisor Fact

3.4% of AccuWeather's high temperature forecasts for Portland were off by more than 10 degrees last month.