Stormy Monday Brings Flooding Risks and Sharp Temperature Drop to Boston

High winds, heavy rain, and a dramatic temperature plunge are in store for Massachusetts on St. Patrick's Day eve.

Mar. 16, 2026 at 11:34am

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A powerful storm system is set to bring heavy rainfall, high winds, and a sharp temperature drop to the Boston area on Monday. Forecasters are warning of potential flooding risks due to saturated ground from recent snowmelt and storms, as well as the possibility of damaging winds. By Tuesday morning, the rain will have cleared out, but temperatures will plummet, ushering in a much colder St. Patrick's Day.

Why it matters

This storm system has the potential to cause significant disruptions and safety concerns for residents in the Boston metro area. The combination of heavy rain, high winds, and a dramatic temperature swing could lead to power outages, transportation issues, and other weather-related challenges just before one of the city's biggest annual celebrations.

The details

The storm is expected to bring 1 to 3 inches of rain across southern New England on Monday. While that amount of rainfall is usually manageable, the ground is currently saturated from recent snowmelt and previous storms, raising the risk of flooding. The height of the storm is forecast to arrive Monday evening, with the cold front sweeping through and ramping up the winds significantly. By Tuesday morning, the rain will have cleared out, but temperatures will plunge, going from near 60 degrees on Monday to the 40s on Tuesday, with Wednesday being the coldest day of the week with highs struggling to reach the upper 30s.

  • A widespread 1 to 3 inches of rain is expected across southern New England on Monday.
  • The height of the storm arrives Monday evening, as the cold front sweeps through and the winds ramp up significantly.
  • By Tuesday morning for St. Patrick's Day, the rain will be gone, but temperatures will drop sharply.
  • Wednesday will be the coldest day of the week, with highs struggling to even reach the upper 30s.

The players

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What’s next

Residents in the Boston area should closely monitor weather forecasts and be prepared for potential flooding, power outages, and transportation disruptions on Monday. They should also plan for a significant temperature drop on Tuesday, the eve of St. Patrick's Day.

The takeaway

This powerful storm system is a stark reminder of the unpredictable and often disruptive nature of New England weather, especially during the transition from winter to spring. Residents will need to stay vigilant and prepared to navigate the challenges posed by heavy rain, high winds, and a dramatic temperature swing in the coming days.