Heat dome will blanket much of the US, with worrisome temperatures in Midwest

TWIN CITIES, Wis. (AP) — Summer will make a dramatic entrance in the U.S. this week with a heat dome that will bring stifling heat and uncomfortable humidity to millions.

The heat will be particularly worrisome this weekend across wide stretches of Nebraska, Illinois, Wisconsin and Iowa, where forecasters are warning of extreme temperature impacts.

This will be the first stretch of true summertime weather for many from Midwest to the East Coast, according to meteorologist Tom Kines of AccuWeather. The soupy conditions will stretch into next week and the humid conditions will make it feel extra toasty.

The National Weather Service issued an extreme heat watch from Saturday afternoon to Sunday evening, with heat index values reaching 108 degrees.