Metro Boston, north shore and metro west: Ahead of yet another approaching arctic front we saw the mercury climb well into the 30s on Saturday. Late day and evening snow showers put down a coating of snow for some as the front was poised to move through the area. Overnight much colder air has begun to transfer into the region with the front moving well offshore. This places us back into the freezer for Sunday as morning lows are in the low teens and will not rise much at all today as gusty west winds continue to usher in the colder arctic air. Wind chill values are going to fall below zero through midday, perhaps into the low single digits this afternoon. It all adds up to a frigid day on Sunday.
As we mentioned the other day systems are moving at a rapid pace. A disturbance in the western Great Lakes at midday Sunday will be positioned near Montreal Monday morning quickly moving into New Brunswick by midnight. With this system moving to our north we will once again develop a strong southwesterly flow later tonight and Monday which in turn drives temperatures well into the 30s for Monday. As a matter of fact the temperatures will begin their ascent late tonight as we reach our lows before midnight. A few snow and rain showers are possible Monday before another cold front blasts through by evening. Once that happens the temperatures crash overnight and Tuesday morning you are going to wake up with temperatures in the single digits throughout the area.
An ocean storm misses us well to our southeast during mid week. A dominant high pressure area will eat up most of the eastern half of the country through the week keeping us dry and abnormally cold. Very cold air will push all the way into the deep South as well.
Late in the week another cold front approaches. Ahead of the front temperatures begin to moderate back to near seasonal levels by Friday.
72 Hour Outlook:
Sunday: Windy and very cold. Mostly sunny skies with a few afternoon clouds. High temperatures in the mid to upper teens. Gusty west winds between 25 and 35 mph at times.
Sunday night: Increasing cloudiness and breezy. Very cold early, moderating temperatures later at night. Lows in the mid teens with temperatures climbing into the upper 20s to low 30s by morning. Brisk southwest winds of 12 to 22 mph.
Monday: Mostly cloudy, chance of snow and rain showers. Highs in the upper 30s to 40 degrees. Southwest winds may gust to 35 mph, especially along the coastal plain.
Monday night: Partly cloudy and turning bitterly cold. Windy. Lows near 10 in Boston, single digits elsewhere. Gusty west winds, diminishing later at night.
Tuesday and Tuesday night: A few clouds, otherwise fair skies and continued quite cold. Highs in the teens. Overnight lows in the single digits to 10 degrees.