Weather forecast August 9, 2020 9:36 am Forecast: Heat Wave to Continue Through Wednesday Today: Warm & humid with a spot shower or storm, high near 90 degrees. Tonight: Fair sky, muggy with lows near 70 degrees. Tomorrow: Hot and humid, spot shower or storm, highs near 90 degrees. US & World Videos 2:55 Much cooler temps Tuesday, with scattered rain 2:44 Weather forecast: Scattered morning rain 3:21 Weather forecast: Partly cloudy, with calm conditions 2:27 Warm and humid Monday in Boston 2:43 Gorgeous start to the week with warm air over New England