Courtland, KS: frost dates by year

Last spring and first fall frost at NOAA station USC00141874, 1962 to 2025, measured from daily minimum temperatures.

Elevation 1,500 ft, 39.781, -97.896. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 18	Oct 21
Earliest	Mar 12 (2012)	Oct 2 (2004)
Latest	May 14 (1966)	Nov 13 (2021)
Trend	1.1 days earlier per decade	1.2 days later per decade
Years with data	33	34

At 28°F (hard freeze) the median last spring date is Apr 7 and the median first fall date is Oct 26.

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	Mar 20	Nov 9
2024	Apr 4	Oct 16	Mar 28	Oct 16
2023	Apr 23	Oct 28	Apr 7	Oct 30
2022	Apr 26	Oct 18	Apr 9	Oct 18
2021	Apr 22	Nov 13	Apr 1	Nov 13
2020	Apr 18	Oct 26	Apr 15	Oct 26
2019	Apr 14	Oct 11	Apr 13	Oct 25
2016	Apr 12	Nov 12	Apr 10	Nov 19
2015	Apr 5	Oct 29	Apr 4	Oct 29
2014	Apr 19	Oct 31	Apr 16	Nov 1
2013	May 5	Oct 19	Apr 25	Oct 19
2012	Mar 12	Oct 7	Mar 10	Oct 7
2011	Apr 17	Oct 20	Apr 6	Oct 20
2010	Apr 4	Nov 5	Mar 23	Nov 6
2009	Apr 14	Oct 10	Apr 8	Oct 10
2008	Apr 27	Oct 25	Apr 15	Oct 28
2007	Apr 16	Oct 23	Apr 9	Nov 1
2006	Apr 27	Oct 12	Mar 28	Oct 19
2005	May 3	Oct 7	Mar 27	Oct 24
2004	May 3	Oct 2	Apr 11	Nov 3
2003	no data	Oct 26	no data	Oct 26
1994	May 1	Oct 25	Apr 29	Oct 25
1993	Apr 5	Oct 10	Apr 2	Oct 10
1972	Apr 9	Oct 7	Apr 8	Oct 19
1971	Apr 14	Oct 9	Apr 7	Oct 31
1970	Apr 23	Oct 9	Apr 4	Nov 1
1969	Apr 6	Oct 14	Mar 31	Oct 14
1968	Apr 24	Oct 28	Apr 6	Nov 11
1967	May 3	Oct 25	May 3	Nov 4
1966	May 14	Oct 16	Apr 28	Oct 16
1965	Apr 29	Oct 22	Mar 30	Nov 9
1964	Apr 14	Oct 9	Apr 9	Oct 20
1963	Apr 23	Oct 29	Apr 4	Nov 1
1962	Apr 15	Oct 25	Apr 9	Oct 25

"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.