Earliest and Latest Days of 100° F in Charleston

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Charleston, Illinois history. It is based on NOAA data from the years 1896–2024.

Also see:

Earliest 100 degree day in Charleston?

The earliest in the year that Charleston, Illinois had a high temperature of at least 100 °F is May 31 which happened in 1934.

Latest 100 degree day in Charleston?

The latest in the year that Charleston, Illinois had a high temperature of at least 100 °F is September 11 which happened in 1933.

Earliest Days ≥ 100 °F

Date	Year	Temperature
May 31	1934	101 °F
June 1	1934	105 °F
June 2	1934	104 °F
June 4	1911	101 °F
June 5	1925	100 °F
June 5	1911	100 °F
June 7	1933	100 °F
June 9	1914	101 °F
June 10	1914	101 °F
June 10	1911	102 °F
June 11	1933	101 °F
June 11	1914	106 °F
June 16	1918	102 °F
June 16	1913	100 °F
June 17	1936	100 °F
June 17	1913	101 °F
June 18	1933	100 °F
June 18	1913	100 °F
June 19	1933	100 °F
June 19	1913	102 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 11	1933	100 °F
September 9	1933	101 °F
September 8	1933	100 °F
September 8	1922	100 °F
September 7	1933	100 °F
September 6	1954	104 °F
September 6	1925	104 °F
September 5	1954	102 °F
September 5	1925	101 °F
September 5	1899	100 °F
September 3	1925	100 °F
September 2	2011	100 °F
September 2	1953	103 °F
September 2	1922	100 °F
August 31	1943	100 °F
August 30	1932	100 °F
August 26	1943	102 °F
August 26	1936	101 °F
August 24	2023	101 °F
August 24	1943	103 °F
August 24	1936	100 °F