Brookfield, MO: frost dates by year

Last spring and first fall frost at NOAA station USC00230980, 1951 to 2017, measured from daily minimum temperatures.

Elevation 767 ft, 39.765, -93.059. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 16	Oct 17
Earliest	Mar 16 (2017)	Sep 21 (1995)
Latest	May 11 (1966)	Nov 12 (2016)
Trend	1.7 days earlier per decade	little change (less than half a day per decade)
Years with data	65	63

At 28°F (hard freeze) the median last spring date is Apr 5 and the median first fall date is Oct 29.

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
2017	Mar 16	Oct 25	Mar 16	Oct 25
2016	Apr 12	Nov 12	Apr 9	Nov 20
2015	Apr 5	no data	Mar 7	no data
2014	Apr 19	Nov 1	Apr 16	Nov 1
2013	May 4	Oct 23	Apr 21	Oct 25
2012	Apr 23	Oct 6	Mar 6	Oct 27
2011	Apr 6	Oct 21	Apr 1	Oct 29
2010	Mar 30	Oct 29	Mar 6	Oct 29
2009	Apr 8	Oct 10	Apr 8	Nov 27
2008	Apr 30	Oct 27	Mar 25	Oct 28
2007	Apr 16	Oct 28	Apr 10	Nov 6
2006	Apr 5	Oct 12	Mar 26	Oct 23
2005	May 4	Oct 24	Mar 21	Oct 24
2004	Apr 14	Oct 15	Apr 13	Nov 12
2003	Apr 11	Oct 2	Apr 10	Nov 6
2002	Apr 7	Oct 16	Apr 5	Nov 1
2001	Apr 19	Oct 17	Mar 28	Oct 27
2000	Apr 13	Oct 7	Apr 9	Oct 7
1999	Mar 26	Oct 18	Mar 25	Oct 18
1998	Apr 16	Nov 4	Mar 24	Nov 4
1997	Apr 17	Oct 21	Apr 16	Oct 21
1996	Apr 30	Oct 22	Apr 8	Oct 31
1995	Apr 22	Sep 21	Apr 5	Nov 2
1994	Apr 29	Oct 25	Apr 7	Oct 26
1993	Apr 5	no data	Apr 2	no data
1992	no data	Oct 17	no data	Oct 17
1991	Mar 30	Oct 7	Mar 30	Oct 19
1990	Apr 17	Oct 22	Apr 12	Oct 22
1989	Apr 16	no data	Apr 16	no data
1988	Apr 24	Oct 6	Mar 27	Oct 28
1987	Apr 12	Oct 3	Apr 4	Oct 11
1986	Apr 22	Oct 14	Apr 22	Nov 10
1985	Apr 9	Oct 1	Apr 9	Nov 5
1984	Apr 1	Sep 29	Apr 1	Nov 2
1983	Apr 19	Nov 5	Apr 19	Nov 5
1982	Apr 21	Oct 21	Apr 9	Oct 21
1981	Apr 6	Oct 19	Mar 20	Oct 23
1980	Apr 14	Oct 12	Mar 17	Oct 26
1979	Apr 10	Oct 5	Apr 6	Oct 13
1978	Mar 27	Nov 7	Mar 27	Nov 7
1977	Apr 6	Oct 16	Apr 6	Nov 11
1976	May 3	Oct 6	Apr 12	Oct 17
1975	Apr 20	Oct 2	Apr 4	Nov 13
1974	Apr 24	Oct 1	Mar 25	Nov 14
1973	Apr 13	Oct 30	Apr 13	Nov 5
1972	Apr 8	Oct 15	Apr 4	Oct 19
1971	May 3	Nov 3	Apr 7	Nov 6
1970	Apr 5	Oct 16	Apr 4	Nov 1
1969	no data	Oct 14	no data	Oct 14
1968	Apr 25	no data	Apr 1	no data
1967	Apr 27	Sep 29	Apr 24	Oct 28
1966	May 11	Oct 17	Apr 21	Oct 23
1965	Apr 16	Oct 12	Mar 30	Oct 24
1964	Apr 9	Oct 6	Apr 9	Oct 9
1963	May 1	Oct 29	Mar 22	Nov 2
1962	Apr 16	Oct 24	Apr 16	Nov 5
1961	May 2	Oct 20	Apr 2	Nov 3
1960	May 1	Oct 20	Apr 10	Oct 20
1959	Apr 22	Oct 12	Mar 22	Oct 28
1958	Apr 29	Oct 30	Mar 28	Nov 6
1957	Apr 14	Oct 20	Apr 14	Oct 26
1956	Apr 24	Nov 8	Apr 24	Nov 9
1955	Mar 29	Oct 15	Mar 28	Nov 3
1954	May 4	Oct 29	Apr 3	Oct 31
1953	Apr 27	Oct 29	Apr 18	Oct 29
1952	Apr 16	Oct 6	Apr 10	Oct 6
1951	Apr 19	Oct 31	Apr 4	Nov 1

"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.