Orleans, CA: frost dates by year

Last spring and first fall frost at NOAA station USC00046508, 1951 to 2025, measured from daily minimum temperatures.

Elevation 403 ft, 41.309, -123.532. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 31	Nov 21
Earliest	Jan 2 (2016)	Oct 8 (1990)
Latest	May 13 (1955)	Dec 30 (2014)
Trend	5.1 days earlier per decade	2.6 days later per decade
Years with data	62	61, 1 with no freeze

At 28°F (hard freeze) the median last spring date is Feb 17 and the median first fall date is Dec 4.

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	Apr 1	Dec 29	Feb 12	none
2024	Mar 18	Nov 29	none	Dec 10
2023	Apr 13	Oct 29	Feb 18	Nov 26
2016	Jan 2	no data	Jan 2	no data
2015	Feb 25	Nov 26	Jan 2	Nov 27
2014	Feb 6	Dec 30	Jan 23	Dec 31
2013	Mar 24	Nov 23	Jan 22	Nov 24
2012	Mar 19	no data	Mar 8	no data
2011	Apr 8	Dec 2	Feb 26	Dec 4
2010	Mar 31	Nov 24	none	Nov 25
2009	Apr 14	Nov 28	Jan 27	Dec 6
2008	Apr 2	Dec 5	Mar 31	Dec 17
2007	Feb 28	Nov 21	Feb 1	Dec 9
2006	Mar 19	Nov 29	Feb 21	none
2005	Feb 6	Dec 15	none	Dec 16
2004	Feb 11	Nov 20	none	Nov 21
2003	Feb 26	Nov 1	Feb 8	Nov 1
2002	Mar 18	Oct 30	Jan 30	Oct 31
2001	Apr 6	Nov 27	Feb 14	none
2000	Jan 6	Nov 17	none	none
1999	Apr 5	Dec 22	Jan 10	none
1998	Mar 30	Dec 5	none	Dec 19
1997	Apr 2	Dec 18	Jan 14	Dec 22
1996	Mar 25	Dec 15	none	none
1995	no data	Nov 3	no data	Nov 4
1992	Feb 4	Nov 10	Jan 20	none
1991	Apr 11	no data	Feb 26	no data
1990	Mar 31	Oct 8	Mar 13	Oct 8
1989	Mar 4	Oct 27	Feb 15	Dec 10
1988	Apr 8	Nov 30	Mar 28	Dec 15
1987	Apr 19	Nov 25	Feb 26	Dec 13
1986	Feb 10	Nov 30	Feb 9	none
1985	May 9	Oct 10	Feb 5	Nov 11
1984	no data	Nov 21	no data	Dec 19
1983	Apr 13	no data	Jan 11	no data
1982	Apr 4	no data	Feb 6	no data
1981	Mar 17	Nov 26	none	none
1980	no data	Dec 7	no data	Dec 8
1979	Feb 11	Nov 27	Feb 3	Dec 11
1978	Feb 11	Oct 30	none	Nov 12
1977	no data	Nov 19	no data	Nov 19
1976	Apr 16	Nov 27	Feb 11	Nov 27
1975	Apr 4	Nov 17	Mar 28	Nov 18
1974	Mar 10	Nov 2	Mar 8	Dec 23
1973	Mar 27	none	Jan 8	none
1972	Apr 30	Oct 27	Feb 3	Dec 5
1971	Mar 19	Oct 16	Feb 20	Oct 28
1970	Apr 29	Dec 2	Jan 6	Dec 19
1969	Mar 28	Nov 18	Mar 17	Nov 30
1968	May 6	Nov 14	Jan 12	Dec 21
1967	Apr 17	Nov 22	Mar 3	Nov 26
1966	Mar 23	Oct 14	Feb 17	Dec 27
1965	May 8	Nov 26	Feb 23	Dec 14
1964	May 6	Nov 13	Mar 8	Nov 14
1963	Mar 16	Nov 28	Mar 4	Dec 11
1962	Mar 14	Dec 23	Feb 27	Dec 23
1961	Feb 23	Nov 13	Jan 5	Nov 16
1960	Mar 1	Nov 5	Feb 28	Dec 6
1959	May 3	Oct 29	Feb 2	Oct 30
1958	Mar 8	Nov 17	Mar 7	Nov 17
1956	Apr 6	Nov 14	Mar 15	Nov 19
1955	May 13	Nov 11	Mar 21	Dec 28
1954	May 1	Oct 24	Mar 2	Nov 30
1953	Apr 7	Dec 22	Mar 3	none
1952	Apr 29	Nov 17	Mar 2	Nov 22
1951	Apr 1	Nov 16	Mar 31	Dec 7

"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.