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° 6.9°
Average change in low temperature day-to-day 6.2° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 17% 64%
Chance of precip day after a dry day 19% 31%

Weather forecast accuracy for Portland, Maine

Last Month
The Weather Channel   70.98%
MeteoGroup   70.11%
Weather Underground   70.11%
Foreca   64.76%
AccuWeather   60.34%
NWS Digital Forecast   59.57%
Dark Sky (forecast.io)   55.46%
World Weather Online   48.28%
Persistence   47.02%
Last Year
The Weather Channel   74.62%
Weather Underground   74.62%
MeteoGroup   73.24%
AccuWeather   72.98%
Foreca   72.40%
NWS Digital Forecast   67.40%
Dark Sky (forecast.io)   67.17%
World Weather Online   61.60%
Persistence   41.87%

ForecastAdvisor Fact

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