Earliest and Latest Days of 80° F in Half Moon Bay

This is a list of the earliest and latest days in the year with a high temperature of at least 80 °F in Half Moon Bay, California history. It is based on NOAA data from the years 1939–2024.

Also see:

Earliest 80 degree day in Half Moon Bay?

The earliest in the year that Half Moon Bay, California had a high temperature of at least 80 °F is March 10 which happened in 2004.

Latest 80 degree day in Half Moon Bay?

The latest in the year that Half Moon Bay, California had a high temperature of at least 80 °F is November 20 which happened in 2005.

Earliest Days ≥ 80 °F

Date	Year	Temperature
March 10	2004	82 °F
March 17	2004	83 °F
April 1	2000	84 °F
April 2	1959	82 °F
April 7	2022	80 °F
April 7	1991	80 °F
April 8	2022	80 °F
April 8	1989	82 °F
April 9	1988	82 °F
April 10	1988	81 °F
April 11	1988	81 °F
April 11	1940	80 °F
April 12	2008	82 °F
April 14	1999	80 °F
April 15	1999	82 °F
April 18	1992	80 °F
April 19	1992	80 °F
April 21	1982	80 °F
April 27	2004	80 °F
April 28	1996	80 °F

Latest Days ≥ 80 °F

Date	Year	Temperature
November 20	2005	80 °F
November 19	2005	80 °F
November 17	2008	80 °F
November 17	2005	80 °F
November 16	2008	82 °F
November 15	2008	81 °F
November 9	1956	80 °F
November 9	1955	80 °F
November 9	1950	81 °F
November 8	1955	80 °F
November 8	1950	81 °F
November 7	1950	80 °F
November 4	2010	80 °F
November 4	2007	81 °F
November 4	1952	84 °F
November 3	1997	81 °F
November 3	1945	81 °F
November 2	1997	85 °F
November 2	1993	80 °F
November 2	1967	85 °F
November 2	1962	81 °F