Weather forecast April 18, 2021 5:30 pm Forecast: Chance of Showers, Warmer Temps This Week Today (Sunday): Sun and clouds, late day shower chance. Highs in the 50s to near 60. Tonight: Mostly cloudy. Lows in the 40s. Monday: Mostly sunny. Late day shower chance. Highs in the lower 60s. US & World Videos 1:29 Sumner Tunnel in Boston to close for one month 2:17 Testimony underway in Karen Read murder trial 2:03 Mass. school officials threaten to suspend student protesters 2:13 Karen Read trial Day 6: Witness testimony resumes 6:03 Tensions rise during campus protests at MIT and Harvard