Boston May 18, 2021 11:27 pm Weather Forecast: Mostly Sunny Tuesday night: Partly cloudy. Lows in the 50s. Wednesday: Mostly sunny. Highs in the 80s, 70s coast. US & World Videos 3:24 Weather forecast: Highs in the 50s 3:43 Look out for showers this afternoon in Boston 3:41 Cool air to linger over Boston into the weekend 3:17 Cooling back down, weekend turns wet in Boston 3:02 Dry and cooler in our region, with temps in the mid-50s