Earliest and Latest Days of 100° F in Austin

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Austin, Texas history. It is based on NOAA data from the years 1893–2024.

Also see:

Earliest 100 degree day in Austin?

The earliest in the year that Austin, Texas had a high temperature of at least 100 °F is April 17 which happened in 2006.

Latest 100 degree day in Austin?

The latest in the year that Austin, Texas had a high temperature of at least 100 °F is October 4 which happened in 2023.

Earliest Days ≥ 100 °F

Date	Year	Temperature
April 17	2006	100 °F
May 4	1984	100 °F
May 5	1984	100 °F
May 7	1998	102 °F
May 25	2011	100 °F
May 25	1925	104 °F
May 27	2011	100 °F
May 28	2011	100 °F
May 30	2003	100 °F
June 2	2018	100 °F
June 5	2018	100 °F
June 6	2022	101 °F
June 6	2011	103 °F
June 7	2022	100 °F
June 9	1948	101 °F
June 9	1925	102 °F
June 9	1917	100 °F
June 9	1902	100 °F
June 10	2022	100 °F
June 10	1948	100 °F
June 10	1918	100 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
October 4	2023	100 °F
October 3	1923	100 °F
October 2	1938	100 °F
September 28	2011	100 °F
September 28	2005	105 °F
September 27	2005	104 °F
September 27	1953	103 °F
September 26	2011	103 °F
September 26	2005	107 °F
September 25	2011	104 °F
September 25	2005	108 °F
September 24	2023	103 °F
September 24	2005	101 °F
September 23	2023	101 °F
September 23	2005	101 °F
September 23	2000	101 °F
September 22	2023	100 °F
September 22	2005	103 °F
September 21	2005	102 °F
September 20	1999	101 °F
September 20	1956	103 °F