Buttonwillow, CA: frost dates by year

Last spring and first fall frost at NOAA station USC00041244, 1951 to 2025, measured from daily minimum temperatures.

Elevation 225 ft, 35.403, -119.470. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Feb 25	Nov 18
Earliest	Jan 1 (1995)	Oct 22 (1996)
Latest	Apr 19 (1955)	Dec 27 (2014)
Trend	3.1 days earlier per decade	1.1 days later per decade
Years with data	67, 2 with no freeze	68, 2 with no freeze

At 28°F (hard freeze) the median last spring date is Jan 30 and the median first fall date is Nov 28.

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	no data	none	no data	none
2021	Jan 26	no data	Jan 26	no data
2020	no data	Nov 9	no data	Nov 27
2019	no data	Oct 31	no data	Oct 31
2018	Feb 28	Nov 10	Feb 24	Dec 29
2017	Mar 6	Nov 30	none	Dec 5
2016	Feb 3	Nov 25	none	Nov 25
2015	Mar 16	no data	Mar 3	no data
2014	Feb 2	Dec 27	none	none
2013	Feb 25	no data	Jan 17	no data
2012	Mar 8	no data	Jan 19	no data
2011	Feb 28	Nov 8	none	Dec 4
2010	none	Nov 24	none	Nov 25
2009	Mar 10	Oct 29	Jan 12	Dec 4
2008	no data	Dec 10	no data	Dec 27
2007	Jan 26	Nov 24	Jan 24	Dec 1
2006	Feb 23	Nov 26	none	Nov 30
2005	Feb 2	Nov 27	none	Dec 6
2004	Feb 11	Nov 22	none	Nov 29
2003	Feb 9	Nov 22	none	Nov 23
2002	Mar 15	Nov 27	Feb 4	none
2001	Feb 9	Nov 11	Jan 18	Dec 16
2000	none	Nov 10	none	Nov 13
1999	Jan 14	none	none	none
1998	Jan 7	Dec 8	Jan 7	Dec 22
1997	Feb 14	Dec 10	none	Dec 10
1996	Feb 28	Oct 22	none	none
1995	Jan 1	Dec 17	none	Dec 17
1994	Jan 31	Nov 3	Jan 12	Nov 20
1993	Feb 1	Nov 15	Jan 4	Nov 25
1992	Feb 4	Nov 11	Jan 13	Dec 1
1991	Feb 1	Nov 16	Jan 30	Nov 29
1990	Mar 13	Nov 4	Feb 16	Nov 27
1989	Mar 4	Nov 28	Feb 7	Nov 28
1988	Mar 13	Nov 19	Feb 6	Nov 20
1987	Feb 27	Nov 26	Feb 27	Nov 27
1986	Feb 11	Nov 10	none	Dec 1
1985	no data	Nov 13	no data	Nov 19
1984	Feb 23	Nov 26	none	Dec 15
1983	Feb 4	Nov 21	Jan 11	Nov 22
1982	Feb 6	Dec 4	Jan 30	Dec 16
1981	Feb 5	Nov 19	none	Nov 30
1980	Apr 1	Nov 13	none	Nov 18
1979	Feb 10	Nov 14	Jan 30	Nov 20
1978	Jan 27	Nov 15	none	Nov 28
1977	Mar 14	Nov 20	Jan 15	Nov 20
1976	Mar 4	Nov 27	Jan 26	Nov 28
1975	Mar 29	Oct 24	Feb 23	Nov 19
1974	Feb 25	Nov 24	Jan 3	Nov 24
1973	Jan 28	Nov 4	Jan 27	Nov 20
1972	Apr 13	Oct 31	Feb 4	Dec 6
1971	Mar 7	Oct 29	Mar 6	Oct 30
1970	Feb 7	Oct 27	Jan 30	Oct 28
1969	Mar 14	Nov 18	Feb 1	Nov 18
1968	Feb 2	Nov 14	Jan 29	Nov 29
1967	Mar 30	Dec 2	Feb 15	Dec 14
1966	Mar 4	Nov 26	Mar 4	Nov 26
1965	Feb 24	Nov 28	Feb 13	Dec 17
1964	Mar 9	Nov 15	Feb 14	Nov 18
1963	Mar 19	Nov 19	Jan 27	Dec 11
1962	Mar 1	Nov 16	Feb 28	Nov 19
1961	Jan 22	Nov 13	Jan 21	Nov 18
1960	Feb 25	Nov 25	Jan 17	Dec 7
1959	Feb 22	Nov 6	Jan 21	Dec 6
1958	Jan 24	Nov 16	Jan 24	Nov 17
1957	Feb 6	Nov 18	Feb 6	Nov 30
1956	Mar 13	Nov 1	Mar 7	Nov 20
1955	Apr 19	Nov 1	Feb 24	Nov 12
1954	Mar 13	Nov 28	Jan 15	Nov 30
1953	Mar 5	Nov 19	Mar 3	Dec 6
1952	Mar 3	Nov 17	Mar 3	Nov 24
1951	Mar 11	Nov 17	Feb 20	Nov 25

"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.