Butler 4W, MO: frost dates by year

Last spring and first fall frost at NOAA station USC00231145, 1951 to 2025, measured from daily minimum temperatures.

Elevation 790 ft, 38.261, -94.405. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 16	Oct 17
Earliest	Mar 11 (2012)	Sep 23 (1983)
Latest	May 11 (1981)	Nov 13 (2016)
Trend	1.7 days earlier per decade	1.1 days later per decade
Years with data	68	69

At 28°F (hard freeze) the median last spring date is Apr 6 and the median first fall date is Oct 30.

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 22	Apr 9	Nov 2
2024	no data	Oct 16	no data	Oct 16
2023	Apr 24	Oct 30	Apr 23	Oct 30
2022	Apr 19	Oct 18	Apr 2	Oct 18
2021	Apr 23	Nov 4	Apr 22	Nov 13
2020	Apr 19	Oct 16	Mar 23	Oct 16
2019	Apr 2	Oct 12	Mar 17	Oct 31
2018	Apr 20	Oct 16	Apr 8	Oct 16
2017	Apr 8	Oct 28	Mar 16	Oct 28
2016	Apr 13	Nov 13	Mar 28	Nov 19
2015	Apr 5	Nov 8	Apr 5	Nov 9
2014	Apr 16	Nov 1	Apr 16	Nov 1
2013	Apr 24	Oct 23	Mar 27	Oct 25
2012	Mar 11	Oct 7	Mar 9	Oct 27
2011	Apr 6	Oct 20	Mar 11	Oct 21
2010	Mar 30	Oct 29	Mar 5	Oct 29
2009	Apr 12	Oct 10	Apr 8	Nov 27
2008	Apr 15	Oct 27	Apr 15	Oct 28
2007	Apr 16	Nov 1	Apr 9	Nov 2
2006	Apr 10	Oct 13	Mar 27	Oct 14
2005	May 3	Oct 25	Mar 20	Oct 26
2004	Apr 13	Nov 5	Apr 13	Nov 25
2003	Apr 12	Oct 26	Apr 11	Nov 7
2002	Apr 6	Oct 13	Apr 5	Oct 16
2001	Apr 18	Oct 17	Mar 28	Oct 27
2000	Apr 9	Oct 7	Mar 13	Oct 9
1998	Mar 24	Nov 6	Mar 21	Nov 21
1997	Apr 18	no data	Apr 15	no data
1996	Apr 17	Oct 23	Apr 8	Oct 31
1995	Apr 14	Sep 23	Mar 30	Nov 3
1994	Apr 7	Oct 25	Apr 7	Oct 26
1993	Apr 22	Oct 10	Mar 24	Oct 30
1992	Apr 22	Oct 17	Apr 3	Nov 28
1991	Mar 30	Oct 6	Mar 30	Nov 2
1990	Apr 14	Oct 19	Apr 12	Oct 22
1989	May 7	Sep 24	Apr 11	Oct 20
1988	Apr 24	Oct 5	Mar 30	Oct 28
1987	Apr 5	Oct 3	Apr 5	Oct 3
1986	Apr 22	Nov 10	Apr 22	Nov 10
1985	Apr 9	Oct 1	Apr 9	Nov 7
1984	Apr 6	Sep 30	Apr 1	Oct 1
1983	Apr 19	Sep 23	Apr 15	Nov 16
1982	Apr 23	Oct 21	Apr 21	Oct 21
1981	May 11	Oct 19	Apr 6	Nov 10
1980	May 9	Oct 4	Mar 11	Oct 4
1979	Apr 28	Oct 5	Apr 6	Oct 10
1978	no data	Oct 7	no data	Oct 24
1977	Apr 5	Oct 12	Mar 31	Nov 11
1976	May 8	Oct 6	May 4	Oct 17
1975	Apr 4	Oct 2	Apr 4	Nov 14
1974	Apr 17	Nov 6	Apr 6	Nov 6
1973	Apr 13	Nov 4	Apr 11	Nov 6
1972	Apr 9	Oct 19	Apr 8	Oct 19
1971	Apr 14	Oct 31	Apr 14	Nov 7
1970	Apr 14	Oct 16	Apr 5	Nov 5
1969	Apr 29	Oct 14	Mar 30	Oct 17
1968	Apr 25	Oct 4	Apr 5	Nov 4
1967	Apr 27	Sep 29	Apr 24	Nov 4
1966	May 9	Oct 16	Apr 21	Oct 16
1965	Apr 29	Oct 12	Mar 31	Nov 13
1964	no data	Oct 3	no data	Oct 9
1963	May 1	Oct 29	May 1	Oct 29
1962	Apr 16	Oct 24	Apr 13	Nov 5
1961	May 2	no data	Apr 18	no data
1960	no data	Oct 20	no data	Oct 20
1958	Apr 7	no data	Mar 25	no data
1956	Apr 24	Nov 8	Apr 24	Nov 9
1955	Mar 29	Oct 24	Mar 28	Nov 3
1954	May 4	Oct 30	Apr 1	Oct 30
1953	Apr 20	Oct 29	Apr 20	Nov 6
1952	Apr 15	Oct 6	Apr 10	Oct 7
1951	Apr 23	Oct 8	Apr 17	Oct 31

"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.