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Boston Weather: 55.0°F | Overcast


A Break in the Sunny Spring

By Roberto Rondanelli

The gorgeous string of sunny spring days will come to an abrupt end today as the low pressure south of Massachusetts will bring moist oceanic air in the form of drizzle and rain. The situation looks very similar to what it was Tuesday and Wednesday last week. The surface low associated with the trough in the upper levels (shown as a thick dashed line) will be deepening until tomorrow, and affecting us until late that day. After the low moves out of our region, our good luck won’t be back just yet. After a 12 to 24 hours rest, a second trough, which today can be seen over Montana and Wyoming, will have moved and deepened over our region, most likely by Thursday afternoon, by which time the weather pattern looks very stationary and three more days of rainy weather are not out of the question. Air temperature again will be dominated by the temperature of the sea, as air will be mostly advected from the east. Thursday and Friday will see some southerly wind, increasing temperatures up to the lower 60’s F.

Extended Forecast

Today: Mostly cloudy. Breezy. Rain likely this afternoon. High 56 F (13 C).

Wednesday: Rain mostly in the morning. Then mostly cloudy and chance
of rain and drizzle. Low 48 F (9 C) . High 54 F (12 C).

Thursday: Mostly cloudy. Rain showers are likely in the afternoon. Low 48 F (9 C) High 60 F (16 C).