Storms to usher-in cooler, drier air to the Heartland
For the remainder of Wednesday, scorching heat will affect the northern Plains and western Corn Belt. Hot weather will also extend across the remainder of the Plains and into the South.
Meanwhile, a severe thunderstorm outbreak may occur later Wednesday, starting in the upper Great Lakes region and sweeping toward Lake Michigan.
Late in the week, cooler air will overspread the northern Plains and the Midwest, though many drier areas will remain in need of moisture. Hot, humid weather will linger into the weekend in the South, where an approaching cold front will generate thundershowers.
Elsewhere, the Southwestern monsoon circulation will remain active, with beneficial showers dampening interior sections of the western U.S. as far north as Idaho and Wyoming.
Looking ahead, the 6- to 10-day outlook calls for calls for near- or above-normal temperatures nationwide, except for cooler-than-normal conditions from the middle Mississippi Valley into the lower Great Lakes region and the middle and northern Atlantic States.
Meanwhile, near- or above-normal rainfall across much of the southern and western U.S. should contrast with drier-than-normal weather in southern Texas and from the Midwest into the Northeast.