Earliest and Latest Days of 90° F in Hillsboro

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

Also see:

Earliest 90 degree day in Hillsboro?

The earliest in the year that Hillsboro, Ohio had a high temperature of at least 90 °F is April 16 which happened in 1896.

Latest 90 degree day in Hillsboro?

The latest in the year that Hillsboro, Ohio had a high temperature of at least 90 °F is October 16 which happened in 1897.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 16	1896	90 °F
April 17	1896	93 °F
April 18	1896	94 °F
April 25	1948	93 °F
May 2	1895	91 °F
May 3	1949	95 °F
May 3	1895	90 °F
May 4	1949	96 °F
May 4	1895	92 °F
May 5	1952	90 °F
May 5	1949	98 °F
May 5	1895	94 °F
May 6	1949	97 °F
May 6	1895	91 °F
May 8	1896	91 °F
May 9	1896	95 °F
May 9	1895	90 °F
May 10	1936	90 °F
May 10	1896	96 °F
May 10	1895	95 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 16	1897	90 °F
October 15	1897	95 °F
October 14	1897	93 °F
October 9	1949	92 °F
October 8	2007	90 °F
October 8	1949	91 °F
October 8	1939	90 °F
October 5	1919	91 °F
October 4	2019	92 °F
October 4	1919	90 °F
October 3	2019	92 °F
October 3	1953	90 °F
October 3	1898	92 °F
October 2	2019	92 °F
October 2	1919	90 °F
October 2	1898	91 °F
October 1	2019	93 °F
October 1	1897	94 °F
September 30	2019	90 °F
September 30	1953	95 °F
September 30	1919	90 °F
September 30	1897	95 °F