Boston, Massachusetts – A stretch of mild July weather across Massachusetts will soon give way to dangerous heat as temperatures climb toward the upper 80s and low 90s by Friday, with oppressive humidity expected to grip the region.
According to the National Weather Service in Boston, today will be mainly sunny with highs ranging from 75 to 80 degrees across most of the state. The comfortable conditions will shift midweek, with Wednesday highs pushing into the low to mid-80s, and Thursday bringing even warmer air and rising dew points. By Friday, forecasters warn the heat index could soar well into the 90s across Greater Boston, Worcester, Springfield, and southeastern Massachusetts—raising concerns for heat-related illnesses.
Boston, Worcester, and the Merrimack Valley will see the hottest conditions, especially in urban areas and along the I-95 corridor. Local emergency management officials urge residents to limit outdoor activities during the afternoon, stay hydrated, and check on vulnerable neighbors and pets. Public cooling centers may open if temperatures and humidity reach critical levels.
This early summer heat is expected to linger into the weekend, with more advisories possible if temperatures and humidity persist. Stay tuned for additional updates as the threat continues.
Five Day Forecast for Massachusetts:
- Tuesday: Mainly sunny, highs 75–80°F, light breeze.
- Wednesday: Mostly sunny, highs 75–85°F. Warm afternoon.
- Thursday: Hot and humid, highs 82–92°F. Increasing humidity.
- Friday: Dangerous heat, highs 85–95°F. Heat index 95–100°F possible.
- Saturday: Hot, partly cloudy, highs 85–92°F. Slight chance of late storms.
