Marathon runners(Miguel A. Amutio / Unsplash)For the best performance when running, it’s smart to take into account temperature and humidity. Find out why with this installment of Science Behind the Forecast.This transcript was edited for clarity and length.Bill Burton: It's time for us to take a look at the Science Behind the Forecast as I'm joined by WAVE 3 meteorologist Tawana Andrew. Good morning, Tawana.Tawana Andrew: Good morning. Today's …