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Boston Weather: 57.0°F | Overcast

Weather: A Second Chance Weekend

By Greg Lawson
STAFF METEOROLOGIST -- The current synoptic situation is a bit messy. Aloft we have a strong trough forming in the jet stream over the Northern Plains, which will strengthen and eventually cut off as the weekend progresses. Having a trough in the middle of the country means that the prevailing steering winds will tend to bring surface disturbances up the east coast. It just so happens that there is a large, weak disturbance covering the lower half of the east coast, which has already delivered moderate amounts of rain to those states. The models predict this mess should organize, most likely aided by the landfall Tropical Depression Kyle, strengthen, and creep northward. It is clear that the system is rain-bearing, but it is not clear how soon it will reach New England (if at all).

I am anticipating a slow northward progression, so I will say that rain is very likely Friday night and through most of Saturday. Chances for showers should linger through Sunday as the system slowly clears out of the area. Regardless of the amount and timing of any precipitation, the weekend should be cool, damp, and grey. Luckily, it’s a holiday weekend, so we will all be able to enjoy a clear, if not chilly, Monday and Tuesday.

Extended Forecast

Today: Overcast. Easterly winds picking up through the day. High 61ºF (16ºC).

Tonight: Overcast with rain beginning late. Winds continue to strengthen. Low 54ºF (12ºC).

Saturday: Rainy and breezy. High of 60ºF (16ºC), low of 53ºF (12ºC).

Sunday: Cloudy. Possibility of intermittent showers. High in the low 60s F (16-18ºC). Low around 50ºF (9-11ºC).

Columbus Day and Beyond: Clearing skies and cooler temps. Highs in the mid 50s F (12-14ºC), lows around 40ºF (4-6ºC).