Temps warming up Sunday but then potential for 'Flash Freeze' by night
From Storm Team 10 Meteorologist R.J. Heim:
Another quick shot of Arctic air arrives tonight, and lasts through early Tuesday morning. After that, temperatures moderate to at or above seasonal levels. Next chance of precipitation will be rain Thursday. The longer range outlook into Christmas Weekend: sunny, mild, not 'White'.
SUNDAY EVENING: Clouds, gusty, turning colder. Temperatures falling into the 30's, then the 20's overnight, bottoming out 18-22 by sunrise.
MONDAY: Sun, clouds, gusty in the morning, colder. Some 'Ocean Effect' snow flurries are possible on Cape Cod. High: 35-30.
MONDAY NIGHT: Clear, arctic cold. Low: 10-15, near 20 coast.
TUESDAY: Sun, clouds, not as cold. High: upper 30's.
WEDNESDAY: Hazy sun, milder. High: mid 40's.
THURSDAY: Cloudy, afternoon rain showers, possibly a bit of a mix at night before skies clear after midnight. Daytime High: near 50. Low Thursday night near freezing.
FRIDAY: Sun, clouds, gusty in the morning. High: mid 40's.
SATURDAY / CHRISTMAS EVE: Hazy sun, breezy, milder. High: upper 40's.
SUNDAY / CHRISTMAS DAY: Hazy sun, increasing clouds, night rain showers, possibly a mix. High: mid-upper 40's.