Farmington, MO: frost dates by year

Last spring and first fall frost at NOAA station USC00232809, 1951 to 2023, measured from daily minimum temperatures.

Elevation 900 ft, 37.792, -90.410. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 16	Oct 13
Earliest	Mar 19 (2017)	Sep 8 (1956)
Latest	May 27 (1961)	Nov 6 (2016)
Trend	2.2 days earlier per decade	2.1 days later per decade
Years with data	62	63

At 28°F (hard freeze) the median last spring date is Apr 9 and the median first fall date is Oct 22.

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
2023	no data	Oct 30	no data	Oct 30
2020	Apr 18	no data	Apr 18	no data
2019	no data	Oct 12	no data	Oct 31
2018	Apr 20	Oct 21	Apr 6	Oct 21
2017	Mar 19	Oct 29	Mar 16	Oct 29
2016	Apr 12	Nov 6	Mar 21	Nov 13
2014	Apr 16	Oct 30	Apr 15	Nov 1
2013	Apr 25	Oct 22	Apr 20	Oct 24
2012	Apr 12	Oct 8	Mar 10	Nov 8
2011	Apr 1	Oct 29	Mar 28	Nov 10
2010	Mar 26	no data	Mar 26	no data
2009	Apr 9	Oct 17	Mar 20	Oct 18
2008	Apr 29	Oct 28	Apr 15	Oct 28
2007	Apr 9	Oct 29	Apr 9	Nov 2
2006	Apr 9	Oct 12	Mar 26	Oct 13
2005	Apr 3	Oct 27	Mar 20	Oct 27
2004	Apr 5	Nov 5	Mar 22	Nov 25
2003	no data	Oct 27	no data	Nov 8
2002	Apr 6	Oct 14	Apr 5	Nov 2
2001	Apr 18	Oct 7	Apr 18	Oct 17
2000	no data	Oct 7	no data	Oct 8
1999	no data	Oct 5	no data	Oct 24
1998	Apr 11	Oct 23	Mar 22	Nov 6
1997	Apr 18	Oct 15	Apr 14	Oct 22
1996	Apr 10	Nov 1	Apr 10	Nov 2
1995	Apr 28	Sep 22	Mar 31	Sep 22
1994	Apr 7	Oct 25	Apr 7	Oct 26
1993	Apr 22	Oct 10	Apr 22	Oct 30
1992	May 7	Oct 17	Apr 28	Oct 17
1991	Mar 30	Oct 7	Mar 30	Oct 7
1990	Apr 12	Oct 11	Apr 12	Oct 11
1989	May 7	Sep 24	Apr 11	Nov 1
1988	Apr 29	Oct 6	Apr 19	Oct 28
1987	Apr 2	Oct 2	Apr 2	Oct 2
1986	no data	Oct 14	no data	Oct 15
1985	Apr 9	no data	Apr 9	no data
1983	Apr 25	no data	Apr 20	no data
1982	Apr 23	Oct 17	Apr 22	Oct 22
1981	Apr 6	Oct 2	Apr 6	Oct 24
1980	May 9	Oct 5	Apr 16	Oct 5
1979	May 5	Oct 5	Apr 7	Oct 5
1978	May 2	Oct 7	Mar 18	Oct 8
1977	Mar 24	Oct 13	Mar 7	Oct 13
1976	May 9	Oct 10	Apr 5	Oct 17
1975	Apr 20	Oct 3	Apr 12	Oct 26
1974	Apr 17	Oct 2	Apr 9	Oct 3
1973	Apr 14	Oct 30	Apr 13	Nov 6
1972	Apr 9	Oct 19	Apr 9	Oct 19
1971	Apr 14	Oct 11	Apr 6	Nov 3
1970	Apr 8	Oct 9	Apr 7	Oct 16
1969	May 11	Oct 15	May 10	Oct 15
1968	Apr 25	no data	Apr 6	no data
1967	May 3	no data	Mar 18	no data
1966	May 10	Oct 6	May 10	Oct 17
1965	Apr 29	Oct 12	Mar 31	Oct 12
1964	Apr 15	Oct 6	Apr 9	Oct 6
1963	May 1	Sep 30	May 1	Oct 30
1962	Apr 16	Nov 1	Apr 16	Nov 5
1961	May 27	Oct 3	May 2	Oct 3
1960	May 13	Oct 20	May 1	Oct 20
1959	Apr 23	Oct 18	Apr 23	Oct 18
1958	Apr 12	Oct 2	Apr 8	Oct 2
1957	Apr 15	Oct 5	Apr 15	Oct 11
1956	Apr 24	Sep 8	Apr 23	Oct 8
1955	Apr 9	Oct 16	Apr 8	Oct 25
1954	Apr 3	Oct 21	Apr 1	Nov 2
1953	Apr 20	Oct 30	Apr 19	Nov 5
1952	Apr 11	Oct 3	Apr 7	Oct 7
1951	no data	Oct 20	no data	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.