Earliest and Latest Days of 100° F in Los Angeles

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

Also see:

Earliest 100 degree day in Los Angeles?

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

Latest 100 degree day in Los Angeles?

The latest in the year that Los Angeles, California had a high temperature of at least 100 °F is November 1 which happened in 1966.

Earliest Days ≥ 100 °F

Date	Year	Temperature
April 5	1989	101 °F
April 6	1989	102 °F
April 23	1910	100 °F
June 10	1979	103 °F
June 11	1979	101 °F
June 16	1981	104 °F
June 18	1957	100 °F
July 2	1907	102 °F
July 4	1907	103 °F
July 5	1907	100 °F
August 25	1926	102 °F
August 29	1909	101 °F
September 1	1955	108 °F
September 2	1955	104 °F
September 4	2022	100 °F
September 4	1988	106 °F
September 4	1961	101 °F
September 5	2004	101 °F
September 8	1944	100 °F
September 9	2022	102 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
November 1	1966	101 °F
October 25	2017	100 °F
October 24	2017	104 °F
October 23	2017	101 °F
October 22	1965	101 °F
October 21	1965	100 °F
October 21	1929	100 °F
October 17	1958	100 °F
October 16	1974	100 °F
October 16	1958	103 °F
October 15	1961	104 °F
October 14	1961	106 °F
October 6	1971	101 °F
October 5	1971	101 °F
October 5	1953	100 °F
October 4	1987	103 °F
October 4	1953	101 °F
October 4	1933	100 °F
October 3	1958	103 °F
October 3	1953	100 °F