An Extreme Heat Warning is now in effect for most of Massachusetts from 10 a.m. Wednesday through 8 p.m. Saturday, as a prolonged and dangerous heat event is expected to bring afternoon heat index values ranging from 98 to 112 degrees across the region. The worst conditions are expected Thursday into Friday, with the Connecticut River Valley — including the Springfield area — and the Merrimack Valley facing the greatest heat and humidity impacts.
Brutal heat arriving in Mass. this week will feel like 113 degrees in some spots
