Earliest and Latest Days of 100° F in Dayton

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Dayton, Tennessee history. It is based on NOAA data from the years 1956–2024.

Also see:

Earliest 100 degree day in Dayton?

The earliest in the year that Dayton, Tennessee had a high temperature of at least 100 °F is June 23 which happened in 1988.

Latest 100 degree day in Dayton?

The latest in the year that Dayton, Tennessee had a high temperature of at least 100 °F is September 1 which happened in 1957.

Earliest Days ≥ 100 °F

Date	Year	Temperature
June 23	1988	100 °F
June 24	1988	100 °F
June 29	2012	102 °F
June 30	2012	103 °F
July 1	2012	100 °F
July 2	2012	104 °F
July 3	2012	104 °F
July 8	1977	100 °F
July 11	1980	100 °F
July 12	1980	104 °F
July 13	1980	101 °F
July 14	1980	100 °F
July 14	1966	101 °F
July 15	1980	101 °F
July 15	1977	100 °F
July 16	1980	107 °F
July 16	1977	100 °F
July 17	1980	106 °F
July 18	1980	100 °F
July 20	1986	101 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 1	1957	100 °F
August 24	2007	102 °F
August 24	1968	102 °F
August 23	2007	100 °F
August 23	1968	100 °F
August 22	1968	102 °F
August 21	1983	101 °F
August 21	1980	100 °F
August 18	2000	100 °F
August 17	2007	100 °F
August 16	1980	100 °F
August 14	1980	102 °F
August 11	1957	100 °F
August 10	1980	104 °F
August 9	1980	103 °F
August 8	1980	103 °F
August 7	1980	102 °F
August 4	2011	100 °F
August 3	1957	100 °F
July 31	1980	101 °F