Thunderstorms and Heat Expected Across Massachusetts

After record-high heat on Tuesday, forecasters expect a warm Tuesday evening with possible thunderstorms and showers. The National Weather Service may issue severe thunderstorm warnings. Temperatures will fall only to the upper 60s and 70s overnight.

High temperatures on Wednesday will be lower and shorter-lived than Tuesday's readings. Most areas will reach the upper 80s to low 90s, while coastal zones stay in the 70s to low 80s. Northern New England will see similar highs near the Massachusetts border.

A strong cold front will move through during the day, bringing scattered showers and thunderstorms to central and eastern sections. Some storms may produce brief heavy rain, gusty winds, and small hail. Boston remains under a moderate heat risk that factors in temperature, humidity, and population density.

Winds will increase through the afternoon, reaching 20 to 30 mph across the region. A front will end the heat wave by evening, with cooler conditions following overnight.