Earliest and Latest Days of 90° F in St. Louis

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in St. Louis, Missouri history. It is based on NOAA data from the years 1893–2024.

Also see:

Earliest 90 degree day in St. Louis?

The earliest in the year that St. Louis, Missouri had a high temperature of at least 90 °F is March 21 which happened in 1907.

Latest 90 degree day in St. Louis?

The latest in the year that St. Louis, Missouri had a high temperature of at least 90 °F is October 30 which happened in 1950.

Earliest Days ≥ 90 °F

Date	Year	Temperature
March 21	1907	90 °F
March 24	1929	92 °F
April 1	1946	91 °F
April 3	2011	90 °F
April 5	1988	91 °F
April 8	2020	90 °F
April 9	2001	91 °F
April 10	2011	90 °F
April 10	1930	93 °F
April 11	1930	90 °F
April 14	2006	92 °F
April 16	2002	90 °F
April 18	2002	93 °F
April 22	1980	90 °F
April 22	1963	90 °F
April 22	1925	91 °F
April 23	1965	90 °F
April 23	1960	91 °F
April 23	1950	90 °F
April 24	2009	90 °F
April 24	1990	90 °F
April 24	1989	90 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 30	1950	90 °F
October 17	2016	91 °F
October 15	1938	90 °F
October 15	1897	90 °F
October 14	1899	90 °F
October 13	1899	90 °F
October 11	1963	94 °F
October 11	1962	90 °F
October 10	1963	92 °F
October 8	2007	90 °F
October 8	1980	92 °F
October 8	1939	92 °F
October 7	2007	91 °F
October 7	1963	92 °F
October 7	1939	92 °F
October 6	2018	90 °F
October 6	1944	90 °F
October 5	1981	90 °F
October 5	1940	90 °F
October 5	1897	91 °F