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 >

Another day of near-record breaking heat is expected today with highs in the mid to upper 90s. Humidity levels will be a bit lower though compared to Friday, which means heat index values also will be a bit lower. A slow-moving cold front begins to provide some relief on Sunday, and then below normal temperatures are expected early/mid next week.
Behind Sunday night's cold front, below normal temperatures are expected for the first time since late August! Look for highs in the 60s/70s for early/mid next week.
Rain is increasingly likely (60-80% chance) between Sunday night and Monday, and a few thunderstorms are possible throughout the day Sunday mainly in central and NE MO and central IL.