July 17, 2017 5:45 am Weather Forecast: Warm, Humid Today (Monday): Fair, warm, humid. Highs in the 80s. Overnight Monday Night: Muggy, mild, Cape shower, chance thunder north/west. Lows around 70. Tuesday: Sticky, chance thunder, especially afternoon. Highs in the 80s. 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