Fairmont, CA: frost dates by year

Last spring and first fall frost at NOAA station USC00042941, 1951 to 2025, measured from daily minimum temperatures.

Elevation 3,060 ft, 34.705, -118.430. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 25	Nov 26
Earliest	Jan 2 (2015)	Oct 29 (1971)
Latest	Jun 7 (1988)	Dec 28 (2025)
Trend	0.6 days earlier per decade	little change (less than half a day per decade)
Years with data	67	67

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