Average January Temperature in Half Moon Bay by Year

This page contains a list of the average monthly high and low temperatures in Half Moon Bay, California for the month of January each year between 1940 and 2024. It is based on NOAA data.

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What Was the Hottest January Ever in Half Moon Bay?

2015 was the warmest January in the history of Half Moon Bay, California. The average daily high temperature was 64.7 °F, and the average low was 45.3 °F.

What Was the Coldest January Ever in Half Moon Bay?

1949 was the coolest January in the history of Half Moon Bay, California. The average daily high temperature was 51.4 °F, and the average low was 34.5 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2024	23	59.2	45.2
2023	33	58.6	44.2
2022	32	61.0	42.0
2021	40	60.1	42.1
2020	52	57.5	43.0
2019	13	60.7	45.5
2018	9	61.0	45.6
2017	53	57.0	43.2
2016	12	59.3	47.0
2015	1	64.7	45.3
2014	15	64.1	41.5
2013	47	58.7	42.8
2012	38	61.0	41.1
2011	24	60.7	43.5
2010	17	59.6	45.8
2009	7	63.5	44.0
2008	68	56.0	40.6
2007	78	57.7	35.5
2006	45	60.5	41.3
2005	49	59.6	41.7
2004	48	58.6	42.9
2001	51	59.4	41.2
2000	30	58.4	44.8
1999	43	58.6	43.3
1998	10	59.3	47.2
1997	25	58.7	45.3
1996	18	59.6	45.4
1995	11	58.4	48.0
1993	59	57.9	41.4
1992	34	60.5	42.3
1991	69	58.1	38.3
1990	31	59.5	43.6
1989	71	56.6	39.7
1988	42	57.7	44.2
1987	56	58.1	41.5
1986	2	61.5	47.6
1985	55	57.8	41.9
1984	20	60.1	44.3
1983	14	60.6	45.1
1982	64	57.0	40.9
1981	8	60.2	46.5
1980	28	59.4	44.2
1979	63	56.5	42.1
1978	3	61.3	47.2
1977	36	59.8	42.7
1976	44	60.9	40.9
1975	58	58.6	40.8
1974	66	55.7	42.0
1973	60	55.8	43.1
1972	74	56.4	38.5
1971	39	59.4	42.7
1970	4	60.4	47.8
1969	73	53.6	41.3
1968	27	58.5	45.2
1967	26	60.4	43.4
1966	50	59.3	41.4
1965	35	58.5	44.2
1964	61	59.0	39.8
1963	70	56.3	40.0
1962	37	59.2	43.0
1961	5	61.7	46.4
1960	57	56.5	43.0
1959	19	60.1	44.8
1957	72	55.5	39.9
1956	46	55.8	45.9
1955	77	54.6	38.9
1954	76	53.4	41.3
1953	6	60.9	46.7
1952	75	52.4	42.3
1951	62	56.1	42.6
1949	80	51.4	34.5
1948	22	61.4	43.0
1947	79	55.5	37.4
1946	67	57.5	40.1
1945	65	56.9	40.9
1944	41	58.4	43.6
1943	54	58.2	41.5
1942	29	58.3	45.2
1941	16	59.6	45.8
1940	21	57.4	47.0

Weather Station Details

Years	Station	Coordinates
1939–2024	Half Moon Bay	location