Weather December 19, 2020 6:23 pm Forecast: Record Cold in Boston Overnight: Mostly cloudy, low in the 20s. Tomorrow: Mostly cloudy, a few snowflakes or raindrops late, highs near 40º. US & World Videos 3:19 Partly cloudy, high temps reach near 70 2:44 It's a cloudy but warm day in Boston 2:53 Monday starts off cloudy with lingering rain 3:45 Forecast: Showers, areas of fog 3:45 Afternoon rains expected on Sunday