Weather Alert: Long-duration stretch of dangerous heat

WEATHER ALERT

A very warm and humid day is ahead with highs climbing into the mid to upper 90s. An Extreme Heat Warning is in effect through Saturday, with heat index values near 115° at times. This will be a long-duration stretch of dangerous heat, with limited relief overnight as temperatures stay warm and muggy.

While most of the day will be dry, a few isolated showers and thunderstorms are possible. The highest risk for stronger storms will be across western New England, where a few storms could become severe. Any stronger storms will be capable of producing heavy downpours, frequent lightning, damaging wind gusts, and hail.

The hottest stretch of the heat wave arrives Thursday and Friday. Highs are expected to reach the triple digits, with record temperatures possible Thursday. The combination of extreme heat and high humidity will make it feel dangerously hot, so limit time outdoors during the afternoon, stay hydrated, and check on those who are more vulnerable to the heat.

4TH OF JULY FORECAST

The heat continues into the 4th of July with highs in the upper 90s and plenty of humidity. Scattered showers and thunderstorms are possible, especially during the afternoon and evening. The timing and coverage of storms are still being fine-tuned, so this is a forecast to keep watching if you have outdoor plans for the holiday.

© 2026 Cox Media Group