Earliest and Latest Days of 90° F in Charleston

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Charleston, Illinois history. It is based on NOAA data from the years 1896–2024.

Also see:

Earliest 90 degree day in Charleston?

The earliest in the year that Charleston, Illinois had a high temperature of at least 90 °F is April 11 which happened in 1930.

Latest 90 degree day in Charleston?

The latest in the year that Charleston, Illinois had a high temperature of at least 90 °F is October 15 which happened in 1897.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 11	1930	92 °F
April 12	1930	90 °F
April 13	1930	90 °F
May 1	1952	90 °F
May 1	1901	90 °F
May 2	1901	90 °F
May 4	1949	90 °F
May 5	1952	92 °F
May 5	1949	90 °F
May 6	1949	93 °F
May 6	1916	92 °F
May 7	1916	90 °F
May 8	1896	92 °F
May 9	1963	90 °F
May 9	1934	92 °F
May 9	1896	94 °F
May 10	1928	92 °F
May 10	1896	92 °F
May 11	2022	92 °F
May 12	2022	90 °F
May 12	1902	90 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 15	1897	90 °F
October 14	1899	92 °F
October 8	2007	90 °F
October 8	1939	90 °F
October 8	1916	90 °F
October 7	2007	91 °F
October 7	1963	90 °F
October 6	2007	90 °F
October 6	1946	90 °F
October 5	1922	92 °F
October 5	1897	90 °F
October 4	2006	91 °F
October 4	1954	91 °F
October 4	1951	90 °F
October 4	1922	94 °F
October 3	1953	90 °F
October 3	1922	94 °F
October 2	2019	92 °F
October 2	2002	90 °F
October 2	1953	94 °F
October 2	1922	92 °F
October 2	1919	91 °F