Chapman, KS: frost dates by year

Last spring and first fall frost at NOAA station USC00141435, 1951 to 2025, measured from daily minimum temperatures.

Elevation 1,111 ft, 38.964, -97.012. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 18	Oct 18
Earliest	Apr 9 (2010)	Oct 4 (2010)
Latest	May 14 (1953)	Oct 30 (2025)
Trend	1.3 days earlier per decade	1.3 days later per decade
Years with data	17	17

At 28°F (hard freeze) the median last spring date is Apr 10 and the median first fall date is Oct 27.

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 9	Oct 30	Mar 23	Nov 10
2024	Apr 13	Oct 16	Mar 28	Oct 16
2023	Apr 24	Oct 28	Apr 24	Oct 30
2022	no data	Oct 18	no data	Oct 19
2020	no data	Oct 24	no data	Oct 26
2019	Apr 15	no data	Apr 13	no data
2018	Apr 27	Oct 15	Apr 19	Oct 15
2017	Apr 27	Oct 11	Mar 15	Oct 28
2016	Apr 12	Oct 13	Apr 8	Nov 12
2015	Apr 21	Oct 25	Apr 10	Oct 30
2014	Apr 18	Oct 29	Apr 18	Nov 1
2013	May 3	Oct 19	Apr 25	Oct 25
2012	Apr 23	Oct 7	Mar 12	Oct 7
2011	Apr 16	Oct 20	Apr 5	Oct 20
2010	Apr 9	Oct 4	Mar 23	Nov 5
1954	May 4	no data	Apr 3	no data
1953	May 14	Oct 5	Apr 20	Oct 27
1952	Apr 15	Oct 6	Apr 10	Oct 6
1951	Apr 17	Oct 22	Apr 16	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.