Highest Daily Low Temperatures in St. Louis History

This is a list of the hottest daily low temperatures ever recorded in St. Louis, Missouri history from 1893–2024 based on data from the NOAA.

Highest temperatures all-time

Record for the highest daily low temperature in St. Louis

The highest low temperature for a calendar day in St. Louis, Missouri history was 87 °F which has happened twice, most recently on Tuesday July 14, 1936.

Rank	Temperature	Date
1	87 °F	July 14, 1936
1	87 °F	July 24, 1934
3	86 °F	July 25, 2012
3	86 °F	July 13, 1936
3	86 °F	July 24, 1901
6	85 °F	July 28, 2023
6	85 °F	July 22, 2017
6	85 °F	July 24, 2012
6	85 °F	July 11, 2011
6	85 °F	August 19, 1936
6	85 °F	July 15, 1936
6	85 °F	August 9, 1934
6	85 °F	August 8, 1934
6	85 °F	July 25, 1934
6	85 °F	July 20, 1934
6	85 °F	July 12, 1930
17	84 °F	July 26, 2023
17	84 °F	July 23, 2022
17	84 °F	July 18, 2015
17	84 °F	July 22, 2011
17	84 °F	July 31, 1980
17	84 °F	July 12, 1966
17	84 °F	August 27, 1936
17	84 °F	July 26, 1936
17	84 °F	July 23, 1934
17	84 °F	August 4, 1930
17	84 °F	July 11, 1930
17	84 °F	August 5, 1918
17	84 °F	July 22, 1901