Only 10 days. Accuweather goes out 25 days. I put little to no faith in it except for a trend. And even that's wrong most of the time. Yesterday their long range showed no temps above the 60s for the next 25 days. Today it shows 2 days in the 70s. By next week it could have temps in the 80s.
I watch the weather closely for the next 24 hours. Beyond that is pretty much a guessing game.