Waynoka, OK: frost dates by year

Last spring and first fall frost at NOAA station USC00349404, 1951 to 2025, measured from daily minimum temperatures.

Elevation 1,508 ft, 36.576, -98.880. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 10	Oct 24
Earliest	Mar 11 (2012)	Sep 21 (1983)
Latest	May 13 (1971)	Nov 17 (1965)
Trend	0.5 days earlier per decade	little change (less than half a day per decade)
Years with data	68	72

At 28°F (hard freeze) the median last spring date is Mar 29 and the median first fall date is Nov 4.

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 8	Oct 30
2024	Mar 29	Oct 16	Mar 28	Nov 23
2023	Apr 9	Oct 29	Mar 28	Oct 30
2022	Apr 15	Oct 18	Mar 13	Oct 19
2021	Apr 22	Oct 31	Mar 3	Nov 13
2020	Apr 18	Oct 24	Apr 4	Oct 24
2019	Apr 14	Oct 12	Apr 1	Oct 29
2018	Apr 20	Oct 15	Apr 16	Nov 10
2017	Mar 16	Oct 28	Mar 16	Oct 28
2016	Apr 3	Nov 12	Mar 26	Nov 19
2015	Apr 5	Oct 25	Apr 4	Nov 13
2014	Apr 18	Nov 1	Apr 16	Nov 11
2013	no data	Oct 17	no data	Oct 27
2012	Mar 11	Oct 7	Mar 11	Oct 7
2011	Mar 25	Oct 20	Mar 6	Nov 4
2010	Apr 9	Nov 5	Mar 23	Nov 18
2009	Apr 8	Oct 11	Apr 8	Nov 18
2007	Apr 16	Oct 26	Apr 9	Nov 6
2006	Mar 28	Oct 22	Mar 25	Nov 2
2005	Apr 30	Oct 24	Mar 2	Nov 16
2004	Apr 14	Nov 4	Mar 2	Nov 4
2003	Apr 9	Oct 26	Apr 9	Nov 7
2002	Apr 4	Nov 3	Apr 3	Nov 15
2001	no data	Oct 15	no data	Oct 15
1999	Mar 28	no data	Mar 14	no data
1998	no data	Nov 10	no data	Nov 10
1997	Apr 14	Oct 22	Apr 14	Oct 27
1996	Apr 30	Nov 2	Apr 23	Nov 11
1995	Apr 27	Oct 21	Apr 11	Oct 24
1994	May 1	Oct 9	Apr 6	Nov 10
1993	Apr 16	Oct 11	Apr 16	Oct 27
1992	Apr 3	Oct 17	Apr 3	Nov 2
1991	Apr 10	Oct 29	Mar 18	Oct 29
1990	Apr 12	Oct 10	Mar 26	Oct 22
1989	Apr 11	Sep 24	Apr 11	Oct 19
1988	Apr 19	Oct 28	Mar 31	Nov 8
1987	Apr 5	Oct 12	Apr 4	Nov 10
1986	Apr 16	Oct 13	Mar 21	Nov 10
1985	Apr 1	Sep 30	Mar 31	Nov 7
1984	no data	Sep 30	no data	Nov 2
1983	Apr 15	Sep 21	Apr 15	Nov 10
1982	Apr 22	Oct 14	Mar 8	Oct 21
1981	Apr 1	Oct 23	Mar 23	Oct 26
1980	Apr 15	Oct 24	Mar 10	Oct 24
1979	Apr 6	Oct 23	Mar 11	Nov 3
1978	Mar 26	Nov 7	Mar 25	Nov 7
1977	Apr 5	Oct 12	Mar 22	Nov 10
1976	Apr 1	Oct 17	Mar 21	Oct 20
1975	Apr 11	Oct 25	Apr 4	Oct 25
1974	Apr 5	Nov 12	Mar 25	Nov 14
1973	Apr 10	Oct 29	Apr 10	Nov 20
1972	Apr 4	Oct 19	Apr 4	Nov 19
1971	May 13	Nov 3	Apr 6	Nov 6
1970	Apr 5	Oct 9	Apr 5	Oct 29
1969	Mar 30	Oct 14	Mar 30	Nov 4
1968	Apr 24	Oct 28	Apr 5	Nov 11
1967	Mar 19	Nov 1	Mar 18	Nov 3
1966	Apr 21	Oct 16	Mar 25	Nov 2
1965	Apr 28	Nov 17	Mar 26	Nov 27
1964	no data	Oct 19	no data	Nov 18
1963	Mar 21	Nov 1	Mar 14	Nov 13
1962	Apr 7	Nov 4	Apr 2	Nov 5
1961	Apr 15	Oct 26	Mar 21	Nov 3
1960	Mar 25	Oct 20	Mar 23	Nov 9
1959	Apr 22	Oct 27	Mar 22	Oct 27
1958	Apr 7	Oct 28	Mar 19	Nov 1
1957	Apr 14	Oct 25	Apr 13	Oct 26
1956	Apr 11	Nov 3	Mar 19	Nov 8
1955	Mar 29	Oct 24	Mar 28	Oct 24
1954	May 3	Oct 27	Apr 1	Oct 30
1953	Apr 20	Oct 7	Apr 20	Nov 9
1952	Apr 14	Oct 7	Apr 10	Oct 7
1951	Apr 13	Nov 1	Apr 3	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.