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Boston Weather: 49.0°F | Overcast

Weather - A Stormy Scenario

Weather

A Stormy Scenario

By Marek Zebrowski
Staff meteorologist

A large area of high pressure provided us with a great stretch of ideal fall weather, but as the weekend approaches, this system will, unfortunately, move away. In its place a cloudy, wet, and chilly spell is forecast to take up residence overhead.

A cold front with abundant moisture will approach the Appalachians by Friday evening while the main low over the Great Lakes begins to weaken. A secondary storm system is likely to develop along the mid-Atlantic coast early on Saturday and race toward New England, bringing along strong onshore winds and significant rainfall. After this surface system moves into the Maritimes by late Sunday, our skies will remain cloudy. Some very cold and unstable air aloft, associated with an upper-level cyclone, will slowly drift overhead, prolonging rather miserable conditions into early next week.

Today: Partly sunny and cooler, with slowly thickening overcast. High of 58F (14C) with light onshore breezes.

Tonight: Becoming partly to mostly cloudy, with some sprinkles and light rain developing well to the South and West. Low readings near 48F (9C) with a stiffening easterly flow.

Saturday: Mostly cloudy with rain developing. Wet and windy afternoon and evening with a high of 54F (12C).

Sunday outlook: Continued mostly cloudy and unsettled, with a chance of showers. Highs 54-59F (12-15C), lows in low to mid 40s (6-8C).