Earliest and Latest Days of 100° F in Santa Ana

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Santa Ana, California history. It is based on NOAA data from the years 1906–2024.

Also see:

Earliest 100 degree day in Santa Ana?

The earliest in the year that Santa Ana, California had a high temperature of at least 100 °F is April 5 which happened in 1989.

Latest 100 degree day in Santa Ana?

The latest in the year that Santa Ana, California had a high temperature of at least 100 °F is November 14 which happened in 1933.

Earliest Days ≥ 100 °F

Date	Year	Temperature
April 5	1989	104 °F
April 6	1989	102 °F
April 8	2022	103 °F
April 13	2008	100 °F
April 13	1940	103 °F
April 14	1940	100 °F
April 19	2009	101 °F
April 20	2009	103 °F
April 27	2008	103 °F
April 27	2004	100 °F
April 29	1921	101 °F
May 2	2004	102 °F
May 3	2004	105 °F
May 13	1979	100 °F
May 14	2014	102 °F
May 14	1927	103 °F
May 15	2014	103 °F
May 24	1932	101 °F
June 9	2020	100 °F
June 9	1979	102 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
November 14	1933	100 °F
November 9	1956	100 °F
November 4	2010	101 °F
November 3	2010	101 °F
November 1	1966	101 °F
October 31	1939	100 °F
October 30	1931	100 °F
October 29	1931	100 °F
October 25	2017	102 °F
October 24	2017	104 °F
October 23	2017	102 °F
October 23	1939	101 °F
October 22	1965	103 °F
October 22	1929	103 °F
October 21	1965	100 °F
October 20	2016	100 °F
October 20	1940	102 °F
October 19	1964	100 °F
October 19	1940	101 °F
October 17	1967	100 °F
October 17	1958	100 °F