Earliest and Latest Days of 90° F in Quincy

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Quincy, Illinois history. It is based on NOAA data from the years 1901–2024.

Also see:

Earliest 90 degree day in Quincy?

The earliest in the year that Quincy, Illinois had a high temperature of at least 90 °F is April 10 which happened in 1930.

Latest 90 degree day in Quincy?

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

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 10	1930	92 °F
April 11	1930	90 °F
April 20	1987	90 °F
April 21	1902	90 °F
April 25	1986	92 °F
April 26	1989	90 °F
April 27	1914	90 °F
April 29	1910	91 °F
April 30	1936	90 °F
May 2	1928	90 °F
May 5	1952	91 °F
May 5	1943	92 °F
May 5	1909	90 °F
May 6	1934	91 °F
May 7	2023	91 °F
May 7	1940	90 °F
May 8	1979	90 °F
May 8	1934	90 °F
May 9	1963	90 °F
May 9	1934	90 °F
May 9	1928	90 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 30	1950	90 °F
October 17	2016	90 °F
October 15	1938	90 °F
October 14	1938	91 °F
October 8	1939	90 °F
October 7	1939	96 °F
October 6	1963	91 °F
October 4	1938	92 °F
October 4	1922	90 °F
October 3	2018	90 °F
October 3	2006	93 °F
October 3	1997	92 °F
October 3	1954	90 °F
October 3	1922	93 °F
October 2	2006	91 °F
October 2	1953	93 °F
October 2	1922	93 °F
October 1	1937	90 °F
September 30	2023	94 °F
September 30	1994	90 °F
September 30	1952	91 °F
September 30	1933	91 °F
September 30	1919	90 °F