Healdton 3 E, OK: frost dates by year

Last spring and first fall frost at NOAA station USC00344001, 1960 to 2025, measured from daily minimum temperatures.

Elevation 902 ft, 34.233, -97.420. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 5	Oct 30
Earliest	Mar 5 (2007)	Oct 8 (2012)
Latest	May 12 (1979)	Nov 28 (1994)
Trend	little change (less than half a day per decade)	little change (less than half a day per decade)
Years with data	65	57

At 28°F (hard freeze) the median last spring date is Mar 25 and the median first fall date is Nov 10.

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 8	Oct 30	Apr 7	Nov 10
2024	Mar 28	Oct 17	Mar 27	Oct 17
2023	Mar 29	Oct 17	Mar 20	Oct 31
2022	Apr 9	Oct 18	Apr 9	Oct 19
2021	Apr 22	Oct 30	Apr 21	Nov 13
2020	Apr 18	Oct 24	Apr 15	Oct 30
2019	Apr 12	Oct 12	Mar 31	Oct 12
2018	Apr 16	Nov 10	Apr 16	Nov 10
2017	Apr 6	Oct 25	Mar 14	Oct 28
2016	Apr 2	Nov 19	Mar 28	Nov 19
2015	Mar 12	Nov 13	Mar 8	Nov 22
2014	Apr 16	Nov 1	Apr 16	Nov 1
2013	May 4	Nov 7	Apr 25	Nov 7
2012	Mar 5	Oct 8	Mar 4	Oct 8
2011	May 3	Oct 20	Apr 5	Nov 4
2010	Apr 8	Oct 29	Mar 23	Nov 6
2009	Apr 8	Nov 18	Apr 8	Nov 18
2008	Mar 24	Oct 24	Mar 9	Oct 28
2007	Mar 5	Nov 22	Mar 5	Nov 22
2006	Mar 25	Nov 2	Mar 24	Nov 30
2005	Mar 28	Oct 24	Mar 17	Nov 16
2004	Apr 14	Nov 25	Feb 27	Dec 1
2003	Apr 10	Nov 24	Apr 9	Nov 24
2002	Mar 27	Nov 16	Mar 24	Nov 30
2001	Mar 27	Nov 20	Mar 1	Nov 20
2000	Mar 13	Oct 9	Mar 12	Oct 10
1999	Mar 16	Nov 3	Mar 16	Nov 3
1998	Mar 13	Nov 6	Mar 13	Dec 9
1997	Apr 14	no data	Apr 13	no data
1996	Mar 28	Nov 9	Mar 27	Nov 24
1995	Mar 10	Nov 4	Mar 9	Nov 4
1994	Apr 7	Nov 28	Apr 6	Nov 30
1993	Apr 2	Oct 30	Mar 14	Oct 30
1992	Apr 3	no data	Mar 24	no data
1991	Mar 14	no data	Mar 10	no data
1990	Apr 7	Oct 22	Mar 25	Dec 4
1989	Apr 11	no data	Apr 11	no data
1988	Apr 19	no data	Mar 30	no data
1987	Apr 5	Oct 21	Apr 3	Nov 11
1986	Mar 21	no data	Mar 1	no data
1985	Mar 17	no data	Mar 6	no data
1984	Apr 17	Nov 11	Apr 5	Nov 21
1983	Apr 16	Oct 26	Apr 15	Nov 11
1982	Apr 11	Oct 20	Mar 7	Oct 25
1981	Apr 6	Oct 24	Mar 20	Nov 11
1980	Apr 15	no data	Apr 15	no data
1979	May 12	Oct 10	Mar 25	Nov 1
1978	no data	Oct 14	no data	Nov 8
1977	Mar 23	Oct 12	Mar 23	Oct 16
1976	Apr 1	Oct 20	Mar 6	Oct 20
1975	Apr 4	Oct 26	Apr 3	Nov 13
1974	Apr 9	no data	Mar 24	no data
1973	Apr 11	Oct 29	Apr 10	Dec 5
1972	Apr 1	Nov 8	Apr 1	Nov 16
1971	Apr 7	Nov 4	Apr 7	Nov 10
1970	Apr 5	Oct 29	Apr 2	Nov 15
1969	Mar 26	Nov 1	Mar 26	Nov 15
1968	Apr 5	Nov 4	Mar 23	Nov 9
1967	Mar 17	Oct 28	Mar 9	Nov 4
1966	Apr 21	Oct 16	Mar 24	Nov 2
1965	Mar 27	Nov 27	Mar 27	Nov 27
1964	Apr 9	Nov 20	Apr 9	Nov 20
1963	Mar 22	Nov 2	Mar 22	Nov 2
1962	Apr 13	Nov 4	Apr 2	Dec 6
1961	Apr 16	Nov 3	Mar 1	Nov 29
1960	Mar 20	Oct 20	Mar 18	Nov 10

"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.