Paso Robles, CA: frost dates by year

Last spring and first fall frost at NOAA station USC00046730, 1951 to 2025, measured from daily minimum temperatures.

Elevation 730 ft, 35.628, -120.686. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 2	Nov 1
Earliest	Feb 5 (2005)	Oct 1 (1971)
Latest	May 26 (1977)	Nov 30 (2025)
Trend	5.6 days earlier per decade	3.2 days later per decade
Years with data	72	73

At 28°F (hard freeze) the median last spring date is Feb 25 and the median first fall date is Nov 17.

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	Mar 11	Nov 30	Feb 11	none
2024	Apr 7	Nov 7	Jan 14	Nov 16
2023	Mar 8	Oct 29	Feb 19	Oct 30
2022	Mar 13	Nov 3	Mar 6	Nov 17
2021	Mar 18	Nov 23	Feb 7	Nov 25
2020	Mar 28	Nov 9	Mar 4	Nov 9
2019	Feb 24	Oct 29	Feb 23	Oct 31
2018	Mar 6	Nov 9	Mar 1	Nov 10
2017	Mar 6	Nov 18	Jan 26	Dec 4
2016	Mar 29	Nov 24	Feb 2	Dec 3
2015	Mar 6	Nov 5	Jan 4	Nov 26
2014	Feb 6	Nov 24	Feb 2	Nov 29
2013	Apr 17	Nov 5	Feb 28	Dec 4
2012	Apr 9	Nov 10	Mar 9	Nov 11
2011	Apr 10	Nov 5	Feb 28	Dec 3
2010	Mar 15	Nov 12	none	Nov 24
2009	Apr 17	Oct 29	Feb 11	Nov 29
2008	Mar 31	Oct 11	Feb 16	Dec 10
2007	Mar 28	Nov 22	Jan 28	Nov 24
2006	no data	Oct 28	no data	Nov 24
2005	Feb 5	no data	Jan 15	no data
2004	Feb 13	no data	Feb 12	no data
2003	no data	Nov 2	no data	Nov 23
2002	Mar 20	Nov 1	Mar 16	Nov 27
2001	Apr 9	Nov 27	Feb 9	Dec 11
2000	Feb 25	Nov 10	Jan 9	Nov 12
1999	Apr 11	Nov 19	Feb 12	Nov 25
1998	Mar 30	Oct 31	none	Dec 5
1997	Apr 14	Oct 26	Feb 26	Dec 12
1996	Feb 28	Oct 21	Feb 26	Nov 30
1995	Mar 27	Nov 27	none	none
1994	Mar 24	Nov 3	Feb 15	Nov 3
1993	Feb 28	Nov 6	Jan 6	Nov 14
1992	Feb 6	Nov 10	Feb 5	Nov 11
1991	Mar 17	Oct 31	Feb 2	Nov 15
1990	Mar 14	Oct 12	Mar 14	Nov 3
1989	Mar 4	Oct 30	Feb 14	Nov 28
1988	Apr 2	Nov 18	Mar 11	Nov 20
1987	Apr 19	Nov 15	Apr 19	Nov 26
1986	Mar 14	Nov 2	Feb 10	Nov 13
1985	Mar 30	Oct 11	Mar 23	Nov 13
1984	Apr 29	Oct 20	Feb 23	Oct 20
1983	Apr 13	Nov 8	Jan 21	Nov 22
1982	Apr 7	Nov 4	Feb 6	Dec 8
1981	Feb 27	Oct 12	Jan 10	Dec 12
1980	Apr 3	Oct 16	Feb 10	Nov 13
1979	Apr 18	Oct 30	Feb 5	Nov 20
1978	Apr 8	Oct 30	none	Oct 31
1977	May 26	Nov 9	Apr 29	Nov 9
1976	Apr 30	Oct 28	Apr 2	Nov 29
1975	Apr 26	Oct 9	Mar 29	Oct 24
1974	May 18	Nov 3	Apr 25	Nov 25
1973	no data	Oct 3	no data	Nov 4
1972	May 25	Oct 30	Apr 19	Oct 30
1971	Apr 25	Oct 1	Apr 21	Oct 25
1970	Apr 29	Oct 27	Apr 29	Oct 28
1969	Mar 16	Oct 4	Feb 1	Nov 18
1968	May 6	Oct 8	Apr 19	Nov 14
1967	Apr 30	Oct 16	Feb 15	Nov 29
1966	Apr 21	Oct 14	Mar 25	Oct 17
1965	May 7	Oct 16	Mar 3	Dec 15
1964	May 7	Nov 14	Apr 24	Nov 14
1963	Apr 2	Nov 1	Mar 4	Nov 22
1962	Mar 23	Nov 15	Feb 28	Nov 17
1961	May 12	Oct 9	Feb 27	Oct 9
1960	Apr 22	Oct 10	Feb 25	Dec 7
1959	Apr 16	Oct 29	Feb 13	Nov 6
1958	Mar 12	Nov 11	Mar 7	Nov 12
1957	Apr 7	Nov 3	Feb 5	Nov 6
1956	Apr 12	Oct 26	Apr 2	Nov 1
1955	Apr 19	Oct 27	Apr 19	Nov 1
1954	Mar 18	Oct 18	Mar 15	Oct 25
1953	Apr 12	Oct 20	Apr 10	Oct 23
1952	Mar 23	Nov 3	Mar 22	Nov 3
1951	Apr 18	Oct 22	Apr 1	Nov 17

"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.