Keo, AR: frost dates by year

Last spring and first fall frost at NOAA station USC00033862, 1951 to 2024, measured from daily minimum temperatures.

Elevation 231 ft, 34.603, -91.993. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 22	Nov 10
Earliest	Feb 21 (2024)	Oct 16 (1952)
Latest	Apr 19 (1953)	Dec 9 (1998)
Trend	3.1 days earlier per decade	2.6 days later per decade
Years with data	73	72

At 28°F (hard freeze) the median last spring date is Mar 6 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
2024	Feb 21	no data	Feb 19	no data
2022	Mar 12	Nov 13	Mar 12	Nov 13
2021	Feb 23	Dec 7	Feb 22	Dec 20
2020	Feb 28	Nov 30	Feb 27	Dec 1
2019	Mar 7	Nov 1	Mar 7	Nov 12
2018	Apr 8	Nov 10	Feb 13	Nov 14
2017	Mar 16	Oct 29	Mar 15	Dec 8
2016	Mar 22	Nov 20	Feb 11	Dec 9
2015	Mar 8	Nov 21	Mar 8	Nov 22
2014	Mar 27	Nov 1	Mar 7	Nov 13
2013	Mar 29	Nov 13	Mar 4	Nov 13
2012	Feb 25	Nov 13	Feb 13	Dec 11
2011	Mar 12	Oct 22	Feb 14	Dec 8
2010	Mar 5	Oct 30	Mar 3	Dec 1
2009	Mar 12	Nov 27	Mar 3	Dec 4
2008	Mar 9	Nov 16	Mar 8	Nov 21
2007	Apr 8	Nov 16	Mar 4	Nov 23
2006	Mar 24	Nov 3	Feb 21	Dec 1
2005	Mar 14	Nov 17	Feb 4	Nov 17
2004	Feb 27	Dec 1	Feb 16	Dec 14
2003	Mar 30	Nov 24	Feb 27	Nov 29
2002	Mar 27	Nov 27	Mar 22	Nov 28
2001	Mar 25	Nov 20	Feb 18	Dec 24
2000	Mar 13	Nov 14	Feb 6	Nov 21
1999	Mar 15	Nov 30	Feb 22	Dec 22
1998	Mar 13	Dec 9	Mar 12	Dec 22
1997	Mar 16	Nov 16	Jan 30	Nov 17
1996	Mar 26	Nov 26	Mar 11	Nov 27
1995	Mar 10	Nov 4	Mar 9	Nov 29
1994	Mar 10	Dec 1	Feb 27	Dec 11
1993	Mar 18	Oct 31	Mar 14	Nov 1
1992	Mar 23	Nov 6	Mar 11	Nov 29
1991	Mar 30	Nov 2	Feb 26	Nov 3
1990	Mar 27	Nov 30	Jan 13	Dec 22
1989	Apr 11	Oct 20	Mar 9	Nov 17
1988	Mar 19	Nov 17	Mar 16	Dec 11
1987	Apr 4	Nov 11	Mar 31	Dec 16
1986	Mar 21	Nov 13	Mar 1	Nov 13
1985	Feb 28	Nov 21	Feb 16	Dec 2
1984	Mar 10	Nov 20	Mar 9	Nov 22
1983	Mar 22	Nov 12	Mar 12	Nov 29
1982	Mar 26	Nov 5	Mar 7	Nov 13
1981	Mar 19	Oct 24	Feb 14	Nov 21
1980	Mar 18	Nov 19	Mar 6	Nov 19
1979	Mar 26	Nov 7	Feb 19	Nov 29
1978	Mar 10	Nov 9	Mar 5	Dec 4
1977	Feb 28	Nov 11	Feb 21	Nov 26
1976	Feb 23	Oct 21	Feb 8	Nov 5
1975	Apr 5	Nov 14	Mar 14	Nov 14
1974	Mar 24	Nov 15	Mar 24	Nov 15
1973	Apr 11	Nov 10	Feb 18	Dec 7
1972	Apr 2	Nov 22	Feb 20	Nov 23
1971	Apr 7	Nov 4	Mar 8	Nov 7
1970	Mar 27	Nov 16	Feb 26	Nov 16
1969	Mar 14	Nov 5	Mar 13	Nov 14
1968	Apr 6	Oct 25	Mar 24	Nov 12
1967	Mar 19	Oct 28	Mar 18	Nov 4
1966	Apr 6	Nov 2	Mar 25	Nov 3
1965	Mar 27	Oct 25	Mar 21	Nov 29
1964	Mar 30	Nov 20	Mar 30	Nov 21
1963	Mar 22	Nov 2	Feb 27	Nov 14
1962	Apr 16	Nov 4	Mar 7	Dec 6
1961	Mar 10	Oct 27	Feb 10	Oct 27
1960	Mar 26	Nov 6	Mar 21	Nov 10
1959	Mar 23	Nov 6	Mar 7	Nov 6
1958	Mar 20	Nov 7	Mar 20	Nov 7
1957	Apr 14	Oct 27	Mar 8	Oct 27
1956	Mar 25	Nov 9	Mar 20	Nov 9
1955	Mar 29	Oct 25	Mar 29	Nov 4
1954	Apr 2	Oct 30	Mar 16	Oct 30
1953	Apr 19	Oct 30	Feb 23	Nov 6
1952	Mar 24	Oct 16	Mar 5	Oct 21
1951	Apr 17	Nov 2	Mar 15	Nov 2

"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.