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Cloudy Skies Give Way to 90-Degree Heat and Storm Potential in Boston

An approaching cold front will spike humidity, with damaging wind gusts and heavy rain possible later this week.

Fire and smoke from an Iranian missile strike in Hertzliya, Israel, on Tuesday, June 17, 2025. Iran fired several waves of drones and missiles over the last 24 hours, while Israel continued hitting Tehran, killing one more senior military official and setting the state-television complex ablaze with a strike during a live broadcast.
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Overview

  • Tuesday brings mostly cloudy skies, patchy morning fog and light shower chances with highs in the low to mid-70s.
  • Humidity and temperatures climb on Wednesday, with highs in the low 80s under partly cloudy skies and scattered morning showers possible.
  • Thursday’s cold front will push highs near 90 degrees and could trigger thunderstorms with damaging wind gusts and brief heavy rain across Greater Boston and southern New Hampshire.
  • Highs are expected to ease into the low to mid-80s on Friday with a lingering chance of a shower before the weekend.
  • June has been average so far for rainfall and temperatures in Boston despite a chaotic spring pattern driven by a wavering jet stream.