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 7.7° 6.5°
Average change in low temperature day-to-day 7.0° 7.2°
Precipitation Last Month Last Year
Chance of dry day after a precip day 54% 69%
Chance of precip day after a dry day 44% 33%

Weather forecast accuracy for Portland, Maine

Last Month
The Weather Channel   73.61%
Weather Underground   73.61%
Foreca   72.78%
AccuWeather   71.11%
MeteoGroup   69.72%
Dark Sky (forecast.io)   68.06%
NWS Digital Forecast   64.44%
World Weather Online   56.39%
Persistence   34.77%
Last Year
Weather Underground   74.90%
The Weather Channel   74.86%
AccuWeather   73.47%
MeteoGroup   71.90%
Foreca   71.03%
NWS Digital Forecast   66.30%
Dark Sky (forecast.io)   65.35%
World Weather Online   60.59%
Persistence   41.61%

ForecastAdvisor Fact

7.4% of Dark Sky (forecast.io)'s high temperature forecasts for Portland were off by more than 10 degrees last year.