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 6.0° 6.5°
Average change in low temperature day-to-day 8.5° 7.2°
Precipitation Last Month Last Year
Chance of dry day after a precip day 50% 69%
Chance of precip day after a dry day 33% 33%

Weather forecast accuracy for Portland, Maine

Last Month
The Weather Channel   74.71%
Foreca   74.71%
AccuWeather   74.14%
Weather Underground   73.28%
MeteoGroup   68.39%
Dark Sky (forecast.io)   67.82%
NWS Digital Forecast   64.66%
World Weather Online   57.76%
Persistence   40.28%
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

On average, The Weather Channel's high temperature forecasts for Portland were off by 2.86 degrees last month.