Lompoc, CA: frost dates by year

Last spring and first fall frost at NOAA station USC00045064, 1951 to 2025, measured from daily minimum temperatures.

Elevation 75 ft, 34.654, -120.451. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Feb 23	Dec 6
Earliest	Jan 4 (2004)	Oct 11 (2019)
Latest	Apr 23 (1961)	Dec 31 (2014)
Trend	7.1 days earlier per decade	1.7 days later per decade
Years with data	69, 10 with no freeze	71, 11 with no freeze

At 28°F (hard freeze) the median last spring date is Jan 21 and the median first fall date is Dec 14.

The trend is a straight-line fit through the years with a freeze. A positive spring trend means the last frost now comes later. Short or patchy records give noisy trends.

Chart

Last spring frost (32°F)

First fall frost (32°F)

Dots are single years. The gray line is the median, the green line the fitted trend.

Year by year

Year	Last spring 32°F	First fall 32°F	Last spring 28°F	First fall 28°F
2025	Jan 17	none	none	none
2024	Jan 12	Dec 20	none	none
2023	Feb 15	none	none	none
2022	Feb 25	none	none	none
2021	none	none	none	none
2020	Feb 5	Nov 19	Jan 14	none
2019	Feb 23	Oct 11	none	Dec 21
2018	Feb 24	Dec 28	none	Dec 29
2017	Jan 26	Dec 5	none	none
2016	none	Dec 18	none	none
2015	none	Dec 30	none	none
2014	none	Dec 31	none	none
2013	Jan 15	Dec 5	none	Dec 5
2012	Jan 19	Dec 20	Jan 17	none
2011	no data	Dec 8	no data	none
2010	Feb 24	Nov 25	none	none
2009	Jan 5	Dec 8	none	none
2008	none	no data	none	no data
2007	no data	Dec 9	no data	none
2005	no data	Dec 6	no data	none
2004	Jan 4	Dec 1	none	none
2003	Feb 19	Dec 27	none	none
2002	Feb 2	none	none	none
2001	Feb 8	none	none	none
2000	Jan 8	Nov 13	none	none
1999	Jan 29	none	none	none
1998	no data	Dec 20	no data	Dec 22
1997	Apr 8	Dec 10	none	none
1996	Feb 28	Dec 3	none	none
1995	none	Dec 21	none	none
1994	Feb 12	Nov 19	none	none
1993	none	none	none	none
1992	none	no data	none	no data
1991	Jan 30	Dec 6	none	none
1990	Feb 15	Dec 14	Feb 15	Dec 22
1989	Mar 4	none	Feb 6	none
1988	no data	Dec 26	no data	none
1987	Feb 26	Dec 3	Jan 18	Dec 24
1986	Feb 9	none	none	none
1985	Mar 3	Nov 13	none	Dec 11
1984	Jan 17	Dec 14	none	none
1983	none	Nov 22	none	none
1982	Mar 20	Dec 25	Jan 3	none
1981	Feb 26	Dec 23	none	none
1980	Jan 22	no data	none	no data
1979	Feb 7	Nov 20	Feb 4	Nov 20
1978	none	Nov 12	none	Nov 12
1977	Mar 20	Dec 19	Mar 20	none
1976	Mar 4	none	Jan 2	none
1975	Feb 22	Nov 20	Jan 30	none
1974	Feb 7	Dec 23	none	Dec 23
1973	Jan 23	Dec 3	Jan 7	none
1972	Mar 29	Dec 5	none	Dec 9
1971	Mar 6	Oct 29	Jan 5	Dec 9
1970	Jan 30	Dec 13	Jan 4	none
1969	Feb 3	Dec 29	none	none
1968	Jan 28	Dec 5	none	Dec 21
1967	Apr 16	Dec 13	Mar 5	Dec 14
1966	Mar 3	Dec 24	none	Dec 27
1965	Feb 10	Dec 17	none	none
1964	Mar 9	Nov 15	none	none
1963	Apr 2	Dec 11	Jan 21	none
1962	Mar 4	Dec 25	Feb 28	Dec 27
1961	Apr 23	Oct 23	Jan 7	Oct 23
1960	Feb 25	Dec 7	Feb 25	Dec 7
1959	Feb 23	Nov 11	Jan 4	Dec 14
1958	Mar 10	Nov 16	none	Nov 17
1957	Mar 24	Nov 17	Feb 4	Dec 1
1956	Apr 4	Oct 29	Feb 17	Nov 28
1955	Apr 19	Nov 23	Feb 4	none
1954	Mar 15	Dec 27	none	Dec 27
1953	Apr 10	Dec 6	Feb 22	Dec 25
1952	Mar 22	Nov 24	Jan 10	none
1951	Mar 8	Nov 23	Jan 2	Dec 10

"none" means the station recorded no freeze at that threshold in that half of the year. "no data" means more than 10% of the season's daily readings were missing. Years with no usable data are left out. See the methodology for the rules, and the ZIP lookup for 1991 to 2020 frost probabilities.