Amity 4 Ne, MO: frost dates by year

Last spring and first fall frost at NOAA station USC00230143, 1951 to 2021, measured from daily minimum temperatures.

Elevation 974 ft, 39.891, -94.360. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 17	Oct 16
Earliest	Mar 10 (2012)	Sep 18 (1991)
Latest	May 15 (1959)	Nov 12 (2004)
Trend	2.3 days earlier per decade	little change (less than half a day per decade)
Years with data	62	65

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
2021	Apr 23	Oct 22	Apr 22	Nov 3
2020	Apr 18	Oct 24	Apr 16	Oct 26
2019	Apr 14	Oct 12	Apr 14	Oct 26
2018	Apr 21	Oct 15	Apr 20	Nov 8
2017	Mar 19	Oct 28	Mar 16	Oct 28
2016	May 3	Oct 13	Apr 13	Nov 12
2015	Apr 24	Oct 30	Mar 28	Nov 10
2014	Apr 19	Nov 1	Apr 16	Nov 1
2013	May 3	Oct 23	Apr 25	Oct 25
2012	Mar 10	Oct 7	Mar 6	Oct 27
2011	Apr 1	Oct 22	Mar 29	Nov 4
2010	Mar 30	Oct 29	Mar 21	Nov 5
2009	Apr 12	Oct 10	Apr 8	Nov 21
2008	Apr 15	Oct 27	Mar 25	Oct 28
2007	Apr 10	Oct 28	Apr 10	Nov 6
2006	Apr 8	Oct 12	Mar 26	Oct 24
2005	Apr 8	Oct 8	Mar 28	Nov 16
2004	Apr 15	Nov 12	Apr 1	Nov 12
2003	Apr 11	Oct 3	Apr 10	Nov 6
2002	Apr 5	Oct 16	Apr 5	Oct 17
2001	Apr 19	Oct 17	Mar 28	Oct 27
2000	Apr 13	Oct 7	Apr 13	Oct 7
1999	Mar 27	Oct 18	Mar 27	Oct 24
1998	Apr 6	Nov 6	Mar 25	Nov 6
1997	Apr 18	Oct 27	Apr 17	Oct 27
1996	Apr 9	Oct 23	Apr 7	Nov 1
1995	Apr 6	Sep 22	Apr 6	Nov 3
1994	Apr 8	Oct 25	Apr 8	Oct 26
1993	Apr 6	no data	Apr 5	no data
1992	May 5	Oct 16	Apr 20	Oct 16
1991	Apr 10	Sep 18	Apr 10	Oct 18
1990	no data	Oct 9	no data	Oct 24
1989	no data	Sep 23	no data	Oct 19
1988	Apr 28	Oct 4	Apr 28	Oct 5
1987	Apr 12	Oct 3	Apr 12	Oct 3
1986	Apr 22	Oct 13	Apr 22	Oct 14
1985	Apr 15	Oct 1	Apr 9	Oct 1
1984	May 8	Sep 26	Apr 1	Sep 29
1983	Apr 19	Sep 23	Apr 19	Nov 11
1982	Apr 21	Oct 20	Apr 21	Oct 21
1981	Apr 5	Oct 2	Mar 23	Oct 23
1980	no data	Oct 12	no data	Oct 26
1976	no data	Oct 6	no data	Oct 8
1974	Apr 15	no data	Apr 15	no data
1973	Apr 13	Oct 29	Apr 13	Nov 3
1972	Apr 25	Oct 19	Apr 8	Oct 19
1971	Apr 7	Oct 10	Apr 7	Nov 3
1970	May 2	Oct 16	Apr 5	Nov 1
1969	Apr 19	Oct 14	Mar 31	Oct 14
1968	Apr 25	Oct 4	Apr 5	Oct 25
1967	May 2	Oct 11	Apr 24	Oct 28
1966	May 10	Oct 16	Apr 21	Nov 2
1965	Apr 28	Oct 24	Mar 30	Oct 24
1964	no data	Oct 9	no data	Oct 9
1963	Apr 23	Oct 29	Mar 22	Oct 29
1962	Apr 16	Oct 24	Apr 15	Oct 25
1961	May 2	Oct 20	Apr 16	Oct 20
1960	May 1	Oct 20	Apr 10	Oct 20
1959	May 15	Oct 9	Apr 9	Nov 5
1958	Apr 29	Oct 26	Apr 29	Nov 6
1957	Apr 14	Oct 25	Apr 14	Oct 25
1956	Apr 24	Nov 8	Apr 24	Nov 9
1955	Apr 7	Oct 24	Apr 7	Nov 3
1954	May 4	Oct 30	Apr 4	Oct 30
1953	Apr 20	Oct 27	Apr 20	Nov 5
1952	Apr 15	Oct 6	Apr 11	Oct 6
1951	Apr 23	Sep 28	Apr 16	Oct 24

"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.