December 18, 2015 9:50 pm Weather Forecast: Cooler Day Ahead Friday night: Mostly clear. Lows in the 20s and 30s. Saturday: Partly cloudy, mountain snow. Windy. Highs in the 30s and 40s. Sunday: Mostly sunny. Highs in the 30s and 40s. 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