Nevada City, CA: frost dates by year

Last spring and first fall frost at NOAA station USC00046136, 1951 to 2025, measured from daily minimum temperatures.

Elevation 2,781 ft, 39.247, -121.001. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 26	Nov 1
Earliest	Feb 17 (1992)	Sep 17 (1965)
Latest	Jun 18 (1975)	Dec 25 (2014)
Trend	5.7 days earlier per decade	6.4 days later per decade
Years with data	70	72, 1 with no freeze

At 28°F (hard freeze) the median last spring date is Mar 25 and the median first fall date is Nov 21.

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

"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.