Number of Days of 90 °F in Half Moon Bay by Year

This page contains a list of the number of days in each year that the high temperature equaled or exceeded 90 degrees Fahrenheit in Half Moon Bay, California, between 1939 and 2024.

Also see:

Which year had the most 90° days?

Based on NOAA records, the year 2003 holds the record for the most 90 °F days in Half Moon Bay history. There were 3 days with a high temperature of at least 90 degrees that year.

How many so far this year (2024)?

It has not reached 90 degrees Fahrenheit in Half Moon Bay so far in 2024. As of April 17, the highest temperature this year is 73 °F.

The last time it reached at least 90° F was October 5, 2023.

Years marked with a gold background have more than 5% incomplete data
Click column headers to sort

Year	Rank	Days >= 90 °F
2024	20	0
2023	9	1
2022	20	0
2021	20	0
2020	2	2
2019	2	2
2018	20	0
2017	2	2
2016	20	0
2015	20	0
2014	20	0
2013	20	0
2012	20	0
2011	20	0
2010	20	0
2009	20	0
2008	20	0
2007	20	0
2006	20	0
2005	20	0
2004	20	0
2003	1	3
2002	20	0
2001	9	1
2000	20	0
1999	20	0
1998	20	0
1997	2	2
1996	20	0
1995	20	0
1994	9	1
1993	20	0
1992	20	0
1991	9	1
1990	20	0
1989	20	0
1988	20	0
1987	20	0
1986	20	0
1985	20	0
1984	20	0
1983	20	0
1982	20	0
1981	20	0
1980	20	0
1979	9	1
1978	9	1
1977	20	0
1976	20	0
1975	20	0
1974	20	0
1973	20	0
1972	20	0
1971	20	0
1970	9	1
1969	20	0
1968	20	0
1967	20	0
1966	20	0
1965	2	2
1964	20	0
1963	20	0
1962	20	0
1961	2	2
1960	20	0
1959	20	0
1958	2	2
1957	20	0
1956	9	1
1955	20	0
1954	9	1
1953	20	0
1952	20	0
1951	20	0
1950	20	0
1949	20	0
1948	20	0
1947	20	0
1946	20	0
1945	20	0
1944	9	1
1943	20	0
1942	20	0
1941	20	0
1940	20	0
1939	9	1

Weather Station Details

Years	Station	Coordinates
1939–2024	Half Moon Bay	location