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 >

The heat is here to stay for at least a few more days. Heat index values will rise above 100 degrees for many areas with the warmest locations peaking around 105 degrees. A heat advisory is in effect. See weather.gov/stlouis for details.
After an extra three weeks of pure summer, a strong cold front is forecast to bring below normal temperatures to the region early/mid next week.
Air quality in the St. Louis region is forecast to be unhealthy for elderly individuals, children, and those with heart/lung conditions.