Average May Temperature in Vacaville by Year

This page contains a list of the average monthly high and low temperatures in Vacaville, California for the month of May each year between 1905 and 2023. It is based on NOAA data.

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What Was the Hottest May Ever in Vacaville?

2001 was the warmest May in the history of Vacaville, California. The average daily high temperature was 91.1 °F, and the average low was 55.5 °F.

What Was the Coldest May Ever in Vacaville?

1933 was the coolest May in the history of Vacaville, California. The average daily high temperature was 74.6 °F, and the average low was 40.5 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	74	77.8	49.9
2022	14	84.9	51.1
2021	5	86.5	53.3
2020	15	83.7	52.1
2019	82	75.9	50.4
2018	43	80.3	51.6
2017	13	82.3	53.7
2016	17	81.5	54.1
2015	65	78.0	50.8
2014	25	82.5	51.7
2013	11	82.9	53.4
2012	30	81.5	52.0
2011	95	74.1	49.1
2010	94	74.2	49.3
2009	4	85.1	56.0
2008	7	82.3	54.6
2007	12	83.0	53.2
2006	28	81.3	52.7
2005	53	78.2	52.3
2004	36	80.7	51.8
2003	67	78.9	49.5
2002	59	80.1	49.6
2001	1	91.1	55.5
2000	35	80.5	52.2
1999	80	78.4	48.5
1998	107	70.3	49.3
1997	2	89.2	54.8
1996	19	82.0	53.3
1995	64	78.2	50.7
1994	61	80.4	49.1
1993	38	79.8	52.4
1992	3	89.4	53.9
1991	83	78.5	47.8
1990	60	79.4	50.1
1989	37	82.1	50.2
1987	18	83.6	51.8
1986	55	80.4	50.0
1984	8	85.5	51.4
1983	70	78.6	49.5
1982	51	81.4	49.5
1981	40	81.6	50.4
1980	85	77.5	48.2
1979	31	83.3	50.2
1978	22	83.2	51.5
1977	109	73.2	45.6
1976	16	85.8	49.9
1975	39	83.1	49.0
1974	72	81.9	46.1
1973	32	85.9	47.4
1972	58	82.7	47.2
1971	101	75.3	45.9
1970	24	83.8	50.6
1969	29	84.4	49.4
1968	84	79.7	46.1
1967	79	81.0	46.0
1966	44	81.9	49.9
1965	33	82.6	50.6
1964	87	78.7	46.9
1963	92	75.7	48.7
1962	78	78.4	48.7
1960	66	79.4	49.5
1959	48	80.3	51.0
1958	23	82.7	51.8
1957	71	77.1	50.9
1956	68	79.0	49.3
1955	47	81.2	50.1
1954	26	84.9	49.2
1953	98	75.5	46.3
1952	34	84.4	48.5
1950	45	83.8	47.9
1949	62	79.8	49.6
1948	105	75.2	44.6
1947	9	86.0	50.8
1946	89	79.5	45.6
1945	104	74.7	45.6
1944	69	80.2	48.0
1943	54	83.3	47.2
1942	102	75.2	46.0
1941	77	77.5	49.9
1940	57	82.1	48.0
1939	49	83.4	47.9
1938	56	82.2	48.1
1937	42	84.4	47.4
1936	41	82.0	50.0
1934	20	86.9	48.1
1933	111	74.6	40.5
1932	91	79.7	44.8
1931	10	86.0	50.7
1930	99	77.2	44.3
1929	52	84.4	46.4
1928	21	85.8	49.2
1927	81	81.8	44.7
1926	63	82.3	46.7
1925	93	75.3	48.6
1924	27	85.6	48.5
1923	96	79.3	43.9
1922	75	82.1	45.6
1921	108	75.1	44.1
1920	86	82.4	43.2
1919	73	81.0	46.8
1916	106	76.1	43.4
1914	6	80.7	58.5
1913	50	82.6	48.6
1912	76	79.1	48.4
1911	100	74.8	46.4
1910	46	83.4	48.2
1909	90	79.0	45.8
1908	97	75.2	46.9
1907	88	77.1	48.4
1906	103	73.7	46.8
1905	110	71.9	46.8

Weather Station Details

Years	Station	Coordinates
1999–2024	Vacaville Nut Tree Airport	location
1893–1998	Vacaville	location