Number of Days of 100 °F in Vacaville by Year

This page contains a list of the number of days in each year that the high temperature equaled or exceeded 100 degrees Fahrenheit in Vacaville, California, between 1893 and 2024.

Also see:

Which year had the most 100° days?

Based on NOAA records, the year 1996 holds the record for the most 100 °F days in Vacaville history. There were 46 days with a high temperature of at least 100 degrees that year.

How many so far this year (2024)?

It has not reached 100 degrees Fahrenheit in Vacaville so far in 2024. As of April 13, the highest temperature this year is 83 °F.

The last time it reached at least 100° F was August 30, 2023.

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

Year	Rank	Days >= 100 °F
2024	124	0
2023	61	21
2022	3	42
2021	9	38
2020	15	35
2019	61	21
2018	25	29
2017	12	36
2016	54	22
2015	37	25
2014	91	16
2013	74	19
2012	85	17
2011	111	8
2010	85	17
2009	21	32
2008	61	21
2007	78	18
2006	47	23
2005	25	29
2004	99	13
2003	37	25
2002	67	20
2001	47	23
2000	41	24
1999	108	10
1998	98	14
1997	61	21
1996	1	46
1995	47	23
1994	28	28
1993	78	18
1992	34	26
1991	37	25
1990	28	28
1989	95	15
1988	32	27
1987	78	18
1986	119	2
1985	91	16
1984	25	29
1983	78	18
1982	114	4
1981	61	21
1980	113	5
1979	41	24
1978	103	12
1977	47	23
1976	54	22
1975	85	17
1974	74	19
1973	41	24
1972	74	19
1971	85	17
1970	47	23
1969	41	24
1968	67	20
1967	28	28
1966	32	27
1965	109	9
1964	91	16
1963	105	11
1962	67	20
1961	4	41
1960	4	41
1959	12	36
1958	15	35
1957	15	35
1956	95	15
1955	23	30
1954	78	18
1953	18	33
1952	23	30
1951	47	23
1950	18	33
1949	54	22
1948	67	20
1947	54	22
1946	109	9
1945	28	28
1944	41	24
1943	47	23
1942	95	15
1941	99	13
1940	67	20
1939	7	39
1938	54	22
1937	12	36
1936	2	45
1935	6	40
1934	9	38
1933	11	37
1932	22	31
1931	18	33
1930	78	18
1929	7	39
1928	54	22
1927	85	17
1926	34	26
1925	99	13
1924	78	18
1923	85	17
1922	34	26
1921	74	19
1920	54	22
1919	61	21
1918	124	0
1917	124	0
1916	67	20
1915	103	12
1914	111	8
1913	124	0
1912	91	16
1911	105	11
1910	67	20
1909	105	11
1908	41	24
1907	119	2
1906	37	25
1905	99	13
1904	124	0
1903	124	0
1902	124	0
1901	124	0
1900	124	0
1899	119	2
1898	123	1
1897	114	4
1896	119	2
1895	117	3
1894	114	4
1893	117	3

Weather Station Details

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