Clemson Univ, SC: frost dates by year

Last spring and first fall frost at NOAA station USC00381770, 1951 to 2025, measured from daily minimum temperatures.

Elevation 800 ft, 34.660, -82.823. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 3	Nov 3
Earliest	Mar 7 (2011)	Oct 3 (1974)
Latest	May 8 (1989)	Dec 6 (1978)
Trend	1.0 days earlier per decade	1.3 days later per decade
Years with data	68	67

At 28°F (hard freeze) the median last spring date is Mar 22 and the median first fall date is Nov 13.

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 7	Nov 11	Mar 4	Nov 11
2024	Apr 6	Nov 29	Feb 25	Nov 30
2023	Mar 22	Nov 2	Mar 22	Nov 2
2022	Apr 10	Oct 19	Mar 15	Nov 14
2021	Apr 22	Nov 14	Apr 4	Nov 14
2020	Apr 11	Nov 3	Mar 7	Dec 2
2019	Mar 28	Nov 3	Mar 7	Nov 13
2018	Apr 17	Nov 11	Mar 22	Nov 11
2017	Mar 20	Nov 20	Mar 17	Nov 20
2016	Mar 22	Nov 15	Feb 27	Nov 21
2015	Mar 30	Nov 14	Mar 29	Nov 23
2014	Apr 16	Nov 2	Mar 27	Nov 3
2013	Mar 30	Oct 26	Mar 30	Nov 13
2012	Apr 12	Nov 9	Mar 6	Nov 25
2011	Mar 7	Oct 30	Feb 13	Nov 12
2010	Mar 8	Nov 6	Mar 7	Nov 7
2009	Mar 22	Oct 19	Mar 5	Dec 6
2008	Mar 25	Oct 29	Mar 25	Nov 17
2007	Apr 10	Oct 30	Apr 8	Nov 7
2006	Mar 27	Oct 15	Mar 27	Dec 5
2005	no data	Nov 11	no data	Nov 18
2004	Mar 23	Nov 15	Mar 23	Nov 15
2003	no data	Nov 14	no data	Nov 14
1999	no data	Oct 24	no data	Nov 4
1998	Mar 23	Nov 22	Mar 13	Dec 18
1997	Apr 18	Oct 28	Mar 16	Nov 16
1996	Apr 10	no data	Mar 23	no data
1995	Mar 11	Nov 5	Mar 10	Nov 9
1994	Apr 1	Nov 24	Feb 28	Nov 24
1993	Apr 3	no data	Apr 3	no data
1991	Mar 12	no data	Mar 11	no data
1990	Apr 8	Nov 18	Apr 8	Nov 30
1989	May 8	Oct 21	Mar 9	Nov 17
1988	Mar 18	Oct 13	Mar 17	Nov 29
1987	Apr 7	Oct 4	Apr 2	Oct 22
1986	Apr 24	Nov 14	Apr 23	Nov 14
1985	Apr 10	Nov 8	Apr 10	Dec 3
1984	Mar 31	Nov 7	Mar 12	Nov 13
1983	Apr 21	Nov 6	Apr 20	Nov 14
1982	Apr 24	Nov 5	Apr 7	Nov 5
1981	Mar 25	Oct 20	Mar 21	Nov 14
1980	Mar 15	Nov 6	Mar 4	Nov 19
1979	Mar 26	Nov 15	Mar 26	Nov 15
1978	Mar 19	Dec 6	Mar 7	Dec 10
1977	Mar 24	Nov 11	Mar 8	Nov 13
1976	Apr 10	Oct 19	Feb 24	Nov 5
1975	Apr 13	Nov 1	Mar 15	Nov 16
1974	Apr 7	Oct 3	Mar 22	Oct 22
1973	Apr 11	Nov 10	Feb 25	Nov 10
1972	Apr 9	Oct 20	Mar 24	Nov 24
1971	Apr 3	Nov 5	Apr 3	Nov 8
1970	Apr 3	Nov 16	Mar 27	Nov 16
1969	Mar 29	Nov 6	Mar 28	Nov 15
1968	Mar 26	Oct 30	Mar 25	Nov 13
1967	Mar 23	Oct 29	Mar 19	Nov 5
1966	Apr 11	Nov 3	Mar 29	Nov 4
1965	Mar 23	Oct 25	Mar 23	Oct 25
1964	Apr 9	Oct 21	Mar 31	Nov 22
1963	Mar 23	Oct 30	Mar 23	Nov 3
1962	Apr 17	no data	Mar 18	no data
1961	Apr 14	Oct 27	Feb 11	Oct 27
1960	Apr 11	Nov 4	Apr 11	Nov 8
1959	Mar 19	Nov 8	Mar 19	Nov 8
1958	Apr 8	Oct 29	Apr 8	Nov 11
1957	Apr 10	Oct 28	Mar 21	Oct 28
1956	Apr 21	Nov 9	Mar 25	Nov 13
1955	Apr 8	Oct 25	Mar 31	Nov 2
1954	Mar 22	Oct 17	Mar 22	Oct 31
1953	Apr 21	Nov 7	Mar 27	Nov 7
1952	Mar 29	Oct 21	Mar 17	Oct 21
1951	Apr 5	Nov 3	Mar 22	Nov 3

"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.