Wasco, CA: frost dates by year

Last spring and first fall frost at NOAA station USC00049452, 1951 to 2025, measured from daily minimum temperatures.

Elevation 291 ft, 35.589, -119.352. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Feb 21	Nov 26
Earliest	Jan 11 (1983)	Oct 25 (1953)
Latest	Apr 11 (1999)	Dec 28 (2018)
Trend	1.3 days later per decade	0.9 days later per decade
Years with data	60, 1 with no freeze	61, 1 with no freeze

At 28°F (hard freeze) the median last spring date is Jan 23 and the median first fall date is Dec 8.

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
2024	no data	Nov 14	no data	none
2023	no data	Nov 10	no data	none
2018	Feb 27	Dec 28	none	none
2017	no data	Dec 5	no data	Dec 23
2016	no data	Dec 18	no data	none
2015	no data	Nov 29	no data	Dec 27
2014	none	no data	none	no data
2013	Feb 11	Dec 4	Jan 15	Dec 5
2012	Mar 8	Nov 12	Jan 18	Dec 20
2011	Feb 28	no data	none	no data
2007	Mar 1	no data	Jan 23	no data
2006	Mar 20	Nov 26	Feb 22	Nov 26
2004	Feb 21	no data	Jan 30	no data
2003	Feb 23	Nov 4	Feb 9	Nov 23
2002	Mar 19	no data	Feb 2	no data
2001	Apr 8	Dec 5	Feb 14	Dec 18
2000	Jan 11	Nov 10	Jan 9	Nov 13
1999	Apr 11	Nov 22	Jan 14	Dec 4
1998	Mar 29	Dec 4	none	Dec 7
1997	Feb 14	Dec 10	Jan 8	Dec 22
1996	Feb 28	Nov 29	Jan 26	none
1995	Jan 18	Dec 17	none	none
1994	Feb 14	Nov 3	Jan 7	Nov 19
1993	Jan 12	Nov 16	Jan 4	Nov 25
1992	Feb 4	Nov 30	Jan 15	none
1991	Feb 1	Nov 16	Jan 30	Nov 29
1990	Mar 12	Nov 21	Feb 16	Nov 28
1989	Mar 4	Nov 27	Feb 7	Nov 29
1988	Feb 21	Nov 20	Feb 4	Dec 9
1987	Feb 26	Nov 26	Jan 21	Dec 14
1986	Feb 11	Nov 9	none	Dec 1
1985	Mar 4	Nov 13	Feb 6	Dec 12
1984	Feb 23	Nov 26	none	Dec 14
1983	Jan 11	Nov 22	Jan 11	Dec 6
1982	Feb 6	Dec 14	Jan 9	Dec 16
1981	Mar 13	Nov 26	none	none
1980	Jan 22	no data	none	no data
1979	Feb 4	Nov 20	Jan 29	Nov 21
1978	Jan 28	Nov 15	none	Dec 6
1977	Mar 29	Nov 20	Jan 15	Nov 20
1976	Jan 27	Nov 28	Jan 15	Dec 25
1975	Feb 22	Nov 12	Jan 31	Nov 29
1974	Feb 18	Nov 23	none	Dec 20
1973	Jan 27	Nov 4	Jan 7	none
1972	Mar 27	Dec 5	Feb 3	Dec 9
1971	no data	Oct 29	no data	Dec 5
1970	Jan 30	Dec 13	Jan 7	none
1969	Feb 13	Nov 18	none	Dec 28
1968	Jan 29	Nov 28	Jan 4	Dec 7
1967	Feb 13	Dec 9	Jan 9	Dec 13
1966	Mar 4	Dec 27	Jan 25	Dec 28
1965	Feb 16	Dec 15	Feb 10	Dec 18
1964	Mar 9	Nov 14	Mar 4	none
1963	Jan 27	Dec 11	Jan 26	Dec 13
1962	Mar 1	Nov 30	Feb 28	Dec 27
1961	Jan 22	Nov 17	Jan 22	Nov 19
1960	Jan 18	Nov 28	Jan 17	Dec 7
1959	Feb 13	Dec 5	Jan 4	Dec 14
1958	Jan 23	Nov 16	none	Nov 17
1957	Feb 5	Dec 1	Feb 4	none
1956	Mar 8	Oct 25	Mar 7	Nov 15
1955	Mar 15	Nov 12	Jan 14	Dec 30
1954	Mar 13	Nov 27	Jan 15	Dec 26
1953	Mar 4	Oct 25	Feb 23	Dec 23
1952	Mar 21	Nov 18	Jan 11	Nov 25
1951	Mar 11	Nov 25	Feb 1	Dec 8

"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.