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Boston Weather: 37.0°F | A Few Clouds

Weather: March towards winter!

Weather

March towards winter!

By Marek Zebrowski
Staff Meteorologist

A cold high pressure system will assure us a fair Friday, but a sloppy, snowy Saturday and a wintry weekend are then to follow. By dawn on Saturday a low pressure system will be developing off Cape Hatteras, along the stalled frontal boundary lying just off shore. Meanwhile, in the northern stream, a clipper-type shortwave is going to drop into the western Great Lakes, sharpening the East coast trough and allowing for a rapid backing of upper flow along the Northeast, as the aforementioned storm develops off the Carolina Capes. There are indications that the southern stream energy will win out, and that phasing of the mid-Atlantic and the Great Lakes systems will not take place. Nonetheless, there is enough moisture and cold air in place to cause a moderate snowfall in the Northeast, just inland from coastal locations, where mixed precipitation is expected. A twin-center area of low pressure (with the coastal storm rapidly intensifying over the Maritimes by early Sunday) will bring a cold and unsettled week.

Today: Mostly sunny with light winds. High 39 F (4 C)

Tonight: Partly cloudy early; clouds thickening after midnight. Light winds turning onshore. Low 27 F (-3 C)

Saturday: Cloudy with snow developing early. Possible accumulations of 6 in. (15cm), especially from Boston area west- and northward. Snow may change to rain over Cape and the islands, southeastern Massachuestts, and near the coast.High 36F (2C) with increasing onshore winds.

Sunday outlook: Partly to mostly cloudy, with scattered snow showers or flurries. Blustery highs near freezing, lows in the 15-20F (-9 to -6C) range.