Friday’s high of 103C breaks a St. Louis record; hottest day in 2023

ST. LOUIS — Friday broke the record for the hottest day of the year in St. Louis, with 103 degrees at St. Louis Lambert Airport. The previous record for this date was 101 degrees in 1943.

The heat index today is between 113 and 118 degrees. The excessive heat warning will remain in effect until 10pm

Strong isolated thunderstorms are possible in the St. Louis area on Friday evening. There may also be occasional storms on Saturday, but the temperatures will be cooler. Temperatures are expected to be high at 89 degrees and low at 68. Sunday high will be around 82 degrees and low at 66 degrees.