Weather July 19, 2020 5:25 pm Forecast: Mostly Clear, Muggy Tonight: Mostly clear. Muggy. Lows in the 60s and 70s. Monday: Still hot & humid. Chance of an afternoon thunderstorm. Highs in the 90s. Heat indices 95-103. Tuesday: Less humidity. Warm, sunny. Highs around 90. US & World Videos 3:43 Look out for showers this afternoon in Boston 3:27 A lot cooler in New England Friday 3:02 Dry and cooler in our region, with temps in the mid-50s 3:11 The weather's great, but the wheels come off the forecast by the weekend 3:14 Weather forecast: Highs near 70 degrees