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 7.9° 6.9°
Average change in low temperature day-to-day 11.2° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 73% 64%
Chance of precip day after a dry day 50% 31%
 
 

Weather forecast accuracy for Portland, Maine

Last Month
MeteoGroup   75.89%
The Weather Channel   74.70%
Weather Underground   74.11%
Foreca   73.21%
AccuWeather   70.54%
NWS Digital Forecast   68.59%
Dark Sky (forecast.io)   68.45%
World Weather Online   60.12%
Persistence   35.80%
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

6.0% of The Weather Channel's low temperature forecasts for Portland were exactly right last month.