forecast May 21, 2020 4:20 am Sunny, 70s Thursday Today: Mostly sunny and mild. Highs in the 70s. Overnight Thursday Night: Clear with lows around 50. Friday: Summer-like warmth with sun. Highs around 80. US & World Videos 3:19 Partly cloudy, high temps reach near 70 2:44 It's a cloudy but warm day in Boston 2:53 Monday starts off cloudy with lingering rain 3:45 Forecast: Showers, areas of fog 3:45 Afternoon rains expected on Sunday