Cimarron, KS: frost dates by year

Last spring and first fall frost at NOAA station USC00141522, 1951 to 2025, measured from daily minimum temperatures.

Elevation 2,703 ft, 37.813, -100.346. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 25	Oct 15
Earliest	Mar 10 (2012)	Sep 3 (1974)
Latest	May 14 (1953)	Nov 14 (1965)
Trend	1.4 days earlier per decade	1.6 days later per decade
Years with data	71	73

At 28°F (hard freeze) the median last spring date is Apr 14 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 21	Oct 19	Apr 15	Oct 19
2024	Apr 11	Oct 16	Mar 28	Nov 1
2023	Apr 17	Oct 15	Apr 7	Oct 28
2022	Apr 25	Oct 18	Apr 15	Nov 5
2021	Apr 22	Oct 16	Apr 21	Nov 13
2020	Apr 18	Oct 23	Apr 17	Oct 24
2019	Apr 15	Oct 11	Apr 14	Oct 11
2018	Apr 17	Oct 15	Apr 17	Oct 15
2017	May 1	Oct 22	Mar 16	Oct 27
2016	Apr 3	Nov 9	Apr 2	Nov 9
2015	Apr 21	Nov 6	Apr 10	Nov 19
2014	May 2	Oct 31	Apr 16	Nov 11
2013	May 5	Oct 19	May 3	Oct 19
2012	Mar 10	Oct 7	Mar 10	Oct 26
2011	May 4	Oct 27	Mar 26	Oct 28
2010	Apr 27	Oct 27	Apr 3	Oct 27
2009	Apr 10	Oct 9	Apr 8	Oct 10
2008	May 11	Oct 24	Apr 2	Oct 24
2007	Apr 16	Nov 1	Apr 15	Nov 3
2006	Apr 27	Oct 19	Apr 9	Oct 22
2005	May 4	Oct 22	Apr 23	Oct 23
2004	Apr 26	Oct 14	Apr 13	Nov 3
2003	Apr 10	Oct 12	Apr 10	Oct 26
2002	Apr 6	Oct 13	Apr 5	Oct 18
2001	Apr 25	Oct 6	Apr 17	Oct 6
2000	Apr 28	Sep 25	Apr 28	Oct 8
1999	Apr 18	no data	Apr 18	no data
1998	Apr 20	Nov 5	Apr 17	Nov 10
1997	Apr 28	Oct 26	Apr 14	Oct 26
1996	Apr 30	Oct 18	Apr 6	Oct 18
1995	Apr 27	Sep 21	Apr 13	Sep 22
1994	May 1	Oct 9	Apr 30	Nov 5
1993	Apr 21	Oct 11	Apr 21	Oct 27
1992	Apr 22	Oct 16	Apr 4	Oct 17
1991	Apr 29	Oct 5	Mar 31	Oct 19
1990	May 1	Oct 10	Apr 6	Oct 18
1989	May 2	Oct 17	Apr 11	Oct 18
1988	Apr 24	Oct 27	Apr 12	Oct 29
1987	Apr 23	Oct 12	Apr 4	Nov 9
1986	Apr 16	Oct 12	Apr 15	Nov 8
1985	Apr 1	Sep 29	Apr 1	Sep 30
1984	Apr 30	Sep 30	Apr 27	Sep 30
1983	no data	Sep 21	no data	Nov 10
1981	May 10	Oct 23	Mar 23	Oct 23
1980	Apr 15	Oct 17	Apr 14	Oct 17
1979	May 11	Oct 10	Apr 6	Nov 1
1978	May 3	Oct 6	Apr 23	Oct 26
1977	Apr 5	Oct 12	Apr 5	Oct 12
1976	Apr 4	Oct 8	Mar 30	Oct 19
1975	May 7	Sep 25	Apr 19	Sep 25
1974	Apr 16	Sep 3	Apr 16	Oct 15
1973	May 3	Oct 27	Apr 16	Nov 3
1972	Apr 4	Oct 18	Apr 4	Oct 19
1971	May 13	Sep 19	Apr 7	Oct 29
1970	May 2	Oct 8	Apr 14	Oct 16
1969	Apr 28	Oct 12	Mar 30	Oct 14
1968	Apr 24	Oct 18	Apr 24	Oct 28
1967	no data	Sep 28	no data	Oct 25
1966	May 13	Oct 1	May 13	Oct 15
1965	Apr 28	Nov 14	Apr 28	Nov 14
1964	Apr 13	Oct 5	Apr 13	Oct 19
1963	Apr 23	Nov 1	Apr 23	Nov 1
1962	Apr 13	Oct 26	Apr 2	Oct 29
1961	Apr 27	Oct 19	Apr 17	Nov 2
1960	May 12	Oct 20	Apr 3	Oct 31
1959	Apr 23	Oct 14	Apr 22	Oct 27
1958	Apr 24	Oct 1	Apr 7	Oct 1
1957	Apr 14	Oct 24	Apr 14	Oct 25
1956	no data	Oct 21	no data	Oct 21
1955	Apr 20	Oct 7	Apr 20	Oct 24
1954	May 3	Oct 15	May 3	Oct 15
1953	May 14	Oct 5	May 14	Nov 6
1952	May 11	Oct 6	Apr 14	Oct 7
1951	May 7	Sep 22	Apr 16	Oct 19

"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.