Hays 1 S, KS: frost dates by year

Last spring and first fall frost at NOAA station USC00143527, 1951 to 2025, measured from daily minimum temperatures.

Elevation 2,010 ft, 38.859, -99.336. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 27	Oct 12
Earliest	Apr 5 (1977)	Sep 13 (2014)
Latest	May 15 (1983)	Nov 10 (1998)
Trend	0.5 days earlier per decade	little change (less than half a day per decade)
Years with data	72	73

At 28°F (hard freeze) the median last spring date is Apr 15 and the median first fall date is Oct 24.

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 15	Oct 30	Apr 15	Oct 30
2024	Apr 13	Oct 16	Apr 12	Oct 16
2023	May 1	Oct 7	Apr 23	Oct 7
2022	Apr 26	Oct 17	Apr 16	Oct 17
2021	Apr 22	Oct 16	Apr 21	Nov 13
2020	Apr 18	Oct 24	Apr 15	Oct 24
2019	May 10	Oct 11	Apr 14	Oct 11
2018	Apr 27	Oct 11	Apr 19	Oct 11
2017	May 1	Oct 11	Apr 11	Oct 27
2016	Apr 12	Oct 7	Apr 12	Nov 9
2015	May 12	Oct 29	Apr 10	Oct 29
2014	May 3	Sep 13	Apr 15	Oct 29
2013	May 4	Oct 16	May 3	Nov 6
2012	Apr 23	Oct 7	Mar 10	Oct 7
2011	May 3	Oct 20	Mar 25	Oct 20
2010	May 8	Oct 30	Apr 3	Nov 5
2009	Apr 11	Oct 3	Apr 11	Oct 10
2008	May 11	Oct 16	Apr 27	Oct 27
2007	Apr 15	Oct 23	Apr 12	Oct 26
2006	Apr 26	Oct 19	Apr 26	Oct 19
2005	May 3	Sep 29	May 3	Oct 23
2004	May 14	Oct 14	Apr 13	Nov 3
2003	Apr 9	Oct 17	Apr 9	Oct 26
2002	Apr 25	Oct 13	Apr 5	Oct 24
2001	Apr 18	Oct 6	Apr 17	Oct 16
2000	Apr 21	no data	Apr 17	no data
1999	Apr 18	Oct 4	Apr 17	Oct 24
1998	Apr 21	Nov 10	Apr 17	Nov 11
1997	May 3	Oct 21	Apr 14	Oct 26
1996	Apr 23	Oct 18	Apr 6	Oct 18
1995	Apr 27	Sep 21	Apr 27	Sep 22
1994	Apr 30	Oct 9	Apr 29	Oct 25
1993	Apr 21	Oct 10	Apr 16	Oct 27
1992	Apr 27	Oct 9	Apr 22	Nov 4
1991	May 6	Oct 5	Mar 19	Oct 6
1990	Apr 12	Oct 10	Apr 11	Oct 18
1989	no data	Sep 24	no data	Oct 18
1988	Apr 27	Oct 28	Apr 27	Oct 28
1987	Apr 22	Oct 12	Apr 4	Oct 17
1986	Apr 16	Oct 12	Apr 16	Oct 14
1984	Apr 30	Sep 29	Apr 28	Sep 30
1983	May 15	Sep 21	Apr 16	Sep 21
1982	Apr 22	Oct 11	Apr 22	Oct 20
1981	May 10	Oct 23	Mar 24	Oct 23
1980	Apr 15	Oct 3	Apr 14	Oct 24
1979	May 11	Oct 23	Apr 7	Nov 2
1978	Apr 25	Oct 6	Apr 20	Oct 14
1977	Apr 5	Oct 11	Apr 5	Oct 12
1976	May 3	Sep 28	May 3	Oct 16
1975	Apr 19	Sep 25	Apr 13	Oct 18
1974	no data	Oct 15	no data	Oct 15
1973	May 15	Oct 29	Apr 11	Oct 29
1972	Apr 9	Oct 7	Apr 4	Oct 19
1971	May 12	Sep 23	Apr 7	Oct 31
1970	May 2	Oct 9	Apr 5	Oct 16
1969	Apr 19	Oct 14	Mar 31	Oct 14
1968	Apr 24	Oct 24	Apr 24	Oct 28
1967	May 3	Sep 28	May 2	Oct 25
1966	May 13	Oct 1	May 13	Oct 15
1965	Apr 28	Oct 22	Apr 28	Nov 14
1964	Apr 29	Oct 5	Apr 9	Oct 19
1963	Apr 23	Nov 1	Apr 23	Nov 1
1962	Apr 13	Oct 24	Apr 7	Oct 25
1961	May 2	Oct 19	May 2	Oct 26
1960	May 12	Oct 19	Apr 5	Oct 31
1959	Apr 22	Oct 17	Apr 22	Oct 27
1958	Apr 24	Oct 1	Apr 7	Nov 4
1957	Apr 14	Oct 25	Apr 13	Oct 25
1956	Apr 30	Oct 21	Apr 20	Oct 31
1955	Apr 7	Oct 17	Apr 7	Oct 24
1954	May 3	Oct 15	May 3	Oct 28
1953	May 14	Oct 5	May 14	Oct 27
1952	May 11	Oct 6	Apr 15	Oct 6
1951	May 7	Oct 7	Apr 16	Oct 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.