St. Louis, Mo. – Dangerous heat will grip the eastern Plains, Midwest, and Mississippi Valley through early this week, with temperatures and humidity pushing heat indices as high as 110 degrees. The National Weather Service has issued widespread Heat Advisories, warning residents of little overnight relief as lows stay stuck in the upper 70s.
According to the Weather Prediction Center, the combination of soaring afternoon highs and high humidity will make conditions hazardous for anyone without access to cooling. Cities including St. Louis, Kansas City, and Memphis are under advisories, where extended time outdoors could lead to heat-related illness. Residents are urged to limit strenuous activity, drink extra water, and check on vulnerable neighbors.
The Northeast and Mid-Atlantic will see a sharp change Monday as a cold front sweeps through, sending highs back into the 70s. This cooler, drier pattern is expected to linger through most of the week, bringing relief from the recent stifling humidity.
Farther south, the Southeast and Gulf Coast will stay seasonably hot with 90s lasting into midweek. Meanwhile, a strengthening ridge will build heat across the Intermountain West, where temperatures will climb toward the triple digits by Tuesday. The Upper Midwest and Great Lakes will be spared the worst, staying unseasonably cool in the 60s and 70s north of the same front.
Conditions across the West Coast also remain below average through midweek, where many cities will hold in the 60s and 70s. Heat alerts are expected to remain in place for the central U.S. until at least Tuesday, with additional warnings possible if the pattern lingers.
