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Boston Weather: 36.0°F | Mostly Cloudy


Cold Facts

By Marek Zebrowski
Staff Meteorologist

As a low pressure system departs our region and moves up the St. Lawrence river valley, a penetrating blast of arctic air will follow in its wake and dominate the weekend weather. By late Sunday a light over-running snow may develop ahead of a surface wave racing along the cold front boundary. Although a brief warmup may accompany this system, a large dome of cold, fair weather will settle over the northeast afterwards, ending the month of February on a chilly and dry note.

Today: Morning rains and clouds moving offshore with clearing in the afternoon. Early highs in mid 40s (5-7C) will drop to mid 30s (1-3C) by evening as gusty southwesterly winds veer toward the northwest.

Tonight: Clear, windy and cold with lows near 20F (-7C) in the city, teens (-8 to -11C) elsewhere

Saturday: Mostly clear and brisk with strong winds continuing. High 32F (0C)

Saturday night: Clear and very cold with slowly diminishing winds. Low in the teens (-8 to -11C) in the city, single digits (-13 to -15C) well to the west and north

Sunday outlook: Fair and cold with clouds increasing late. High in low to mid 30s (1-3C) with a chance of light snow after dark.