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Boston Weather: 66.0°F | A Few Clouds

Weather: Wild Wednesday

Weather

Wild Wednesday

By Marek Zebrowski
Staff Meteorologist

A fast-moving low pressure system will strengthen and deepen as it tracks from the Ohio to the St. Lawrence valley. Ahead of the system, rainy and mild weather accompanied by southerly gales is expected. A vigorous cold front trailing this surface feature will sweep off our coast by late Wednesday, bringing colder, seasonable weather in its wake.

The next feature on our radar will be a clipper-type storm from the Plains, approaching by late Friday. Even though a limited amount of moisture is likely to be available, this low bears watching: the air mass over New England by late Friday will be cold enough to support a frozen rather than liquid precipitation. Afterwards, a modified arctic high will bring still colder but tranquil weather to the Northeast, with the bulk of frigid air confined to the northern Lakes and Plains.

Today: Cloudy, showery, and mild. High 54F (12C) with very strong southerly winds, averaging 20-30 mph (32-48 kmh) with higher gusts likely. Local downpours and coastal flooding (especially along the south coast) are expected.

Tonight: Cloudy early, turning colder with a flurry possible before daybreak. Low 32F (0C), winds shifting to northwest.

Thursday: Mostly sunny and cold with diminishing winds. High 37F (3C).

Thursday night: Clear and cold. Lows in low 20s (-6 to -5C) in town, teens (-11 to -7C) elsewhere.

Friday: Some sun early through high overcast, then thickening clouds. Winds gradually turning onshore. Highs in low-to-mid 30s (0-2C). Chance of light snow after dark, with temperatures hovering near freezing.

Weekend outlook: Mixed precipitation near the coast and snow inland should be ending from west to east, giving way to clear and colder weather by late Saturday. Highs will be in mid 30s (2-3C), lows near 20F (-6C). Sunny and still colder weather is expected on Sunday.