National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Heat index values will be in the upper 80s to lower 90s to start the evening, cooling after sunset. There is an isoalated chance of showers across far northwest Missouri and northeast Kansas. If storms developed Lightning would be the main concern.
The heat and humidity will continue through Saturday, but the passage of a cold front Saturday afternoon and evening will bring thunderstorms Saturday evening, with multiple rounds of storms possible through Sunday night.
A cold front will bring showers and thunderstorms to much of the area Saturday night inot Sunday. A few severe storms are possible, capable of producing hail and damaging wind gusts. Locally heavy rainfall may lead to some flooding. Thunderstorms may persist with more storms possible Sunday.