Earliest and Latest Days of 90° F in Dayton

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

Also see:

Earliest 90 degree day in Dayton?

The earliest in the year that Dayton, Ohio had a high temperature of at least 90 °F is April 30 which has happened twice, most recently in 1942.

Latest 90 degree day in Dayton?

The latest in the year that Dayton, Ohio had a high temperature of at least 90 °F is October 15 which has happened twice, most recently in 1899.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 30	1942	90 °F
April 30	1899	90 °F
May 3	1899	90 °F
May 5	1952	90 °F
May 5	1895	90 °F
May 9	1936	90 °F
May 9	1896	92 °F
May 9	1895	90 °F
May 10	1936	93 °F
May 10	1896	94 °F
May 10	1895	91 °F
May 11	1896	94 °F
May 15	1900	92 °F
May 16	1962	91 °F
May 16	1900	94 °F
May 16	1899	91 °F
May 17	1962	92 °F
May 17	1911	90 °F
May 17	1906	90 °F
May 17	1900	93 °F
May 17	1899	93 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 15	1899	91 °F
October 15	1897	90 °F
October 14	1899	91 °F
October 10	1913	91 °F
October 5	1922	90 °F
October 5	1900	93 °F
October 4	1922	90 °F
October 4	1900	91 °F
October 3	1919	91 °F
October 3	1900	93 °F
October 3	1898	91 °F
October 2	2019	94 °F
October 2	1922	90 °F
October 2	1919	92 °F
October 2	1900	90 °F
October 2	1898	90 °F
October 1	2019	94 °F
October 1	1897	93 °F
September 30	2019	94 °F
September 30	1897	94 °F