Lamar 7N, MO: frost dates by year

Last spring and first fall frost at NOAA station USC00234705, 1951 to 2025, measured from daily minimum temperatures.

Elevation 963 ft, 37.598, -94.284. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 11	Oct 25
Earliest	Mar 9 (2012)	Sep 24 (1989)
Latest	May 4 (1954)	Nov 19 (2016)
Trend	1.5 days earlier per decade	0.5 days later per decade
Years with data	73	72

At 28°F (hard freeze) the median last spring date is Mar 30 and the median first fall date is Nov 4.

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 8	Nov 2	Mar 10	Nov 2
2024	Mar 28	Oct 16	Mar 28	Oct 16
2023	Apr 24	Oct 30	Mar 28	Oct 30
2022	Apr 10	Oct 18	Apr 9	Oct 18
2021	Apr 23	Nov 13	Mar 2	Nov 13
2020	Apr 19	Oct 16	Mar 22	Nov 13
2019	Apr 13	Oct 31	Apr 1	Nov 8
2018	Apr 17	Oct 16	Apr 16	Nov 10
2017	Mar 16	Oct 28	Mar 16	Oct 28
2016	no data	Nov 19	no data	Nov 19
2014	Apr 15	Oct 31	Apr 15	Oct 31
2013	May 2	Oct 23	Mar 27	Nov 11
2012	Mar 9	Oct 7	Feb 25	Oct 28
2011	Apr 5	Oct 20	Mar 10	Nov 17
2010	Mar 30	Oct 29	Mar 5	Nov 6
2009	Apr 11	Oct 18	Apr 8	Nov 26
2008	Apr 14	Oct 27	Apr 14	Oct 28
2007	Apr 16	Nov 2	Apr 9	Nov 7
2006	Mar 26	Oct 22	Mar 26	Nov 2
2005	Mar 29	Oct 25	Mar 15	Nov 16
2004	Apr 1	Nov 5	Mar 13	Nov 25
2003	Apr 11	Nov 7	Mar 30	Nov 7
2002	Apr 5	Oct 14	Apr 4	Nov 12
2001	Apr 18	Oct 16	Mar 27	Oct 27
2000	Apr 9	Oct 8	Mar 13	Oct 8
1999	Mar 27	Oct 24	Mar 26	Oct 24
1998	Mar 23	Nov 6	Mar 21	Dec 8
1997	Apr 15	Oct 27	Apr 13	Nov 11
1996	Apr 9	Oct 31	Apr 7	Nov 3
1995	Mar 31	Nov 3	Mar 30	Nov 3
1994	Apr 8	Oct 26	Apr 6	Oct 26
1993	Mar 24	Oct 28	Mar 18	Oct 30
1992	Apr 4	Nov 4	Apr 3	Nov 27
1991	Mar 31	Oct 30	Mar 31	Nov 2
1990	Apr 13	Oct 22	Mar 26	Nov 28
1989	Apr 12	Sep 24	Apr 12	Oct 20
1988	Apr 28	Oct 12	Mar 30	Oct 29
1987	Apr 6	Oct 3	Apr 6	Oct 12
1986	Apr 22	Nov 10	Apr 22	Nov 11
1985	Apr 9	Oct 2	Mar 6	Nov 20
1984	Apr 5	Oct 1	Mar 23	Nov 12
1983	Apr 20	Nov 10	Apr 16	Nov 16
1982	Apr 21	Oct 21	Apr 7	Oct 22
1981	Mar 21	Oct 23	Mar 20	Nov 21
1980	Apr 14	Oct 25	Mar 14	Oct 29
1979	Apr 7	Oct 10	Apr 6	Nov 7
1978	Apr 22	Nov 7	Mar 27	Nov 28
1977	Apr 5	Oct 12	Mar 23	Nov 12
1976	May 3	no data	Mar 17	no data
1975	Apr 5	Nov 13	Apr 4	Nov 13
1974	Apr 9	Nov 6	Mar 26	Nov 14
1973	Apr 11	Nov 5	Apr 10	Nov 10
1972	Apr 9	Oct 19	Apr 5	Oct 19
1971	Apr 5	Nov 7	Mar 26	Nov 7
1970	Apr 6	Nov 5	Apr 5	Nov 5
1969	Mar 31	Oct 17	Mar 31	Oct 28
1968	Apr 6	Oct 25	Apr 5	Nov 8
1967	Apr 24	Oct 19	Mar 19	Nov 4
1966	Apr 22	Oct 16	Mar 25	Nov 2
1965	Apr 28	Oct 12	Mar 27	Nov 17
1964	Apr 9	Oct 9	Mar 31	Oct 20
1963	May 1	Oct 29	Mar 22	Oct 29
1962	Apr 13	Oct 31	Apr 3	Nov 8
1961	Apr 16	Oct 20	Apr 10	Nov 3
1960	May 1	Oct 20	Mar 26	Oct 20
1959	Apr 22	Oct 18	Apr 11	Oct 18
1958	Mar 31	Oct 1	Mar 28	Oct 27
1957	Apr 14	Oct 26	Apr 13	Oct 26
1956	Apr 24	Nov 9	Apr 23	Nov 9
1955	Mar 29	Oct 24	Mar 29	Nov 3
1954	May 4	Oct 30	Apr 2	Nov 2
1953	Apr 20	Oct 29	Apr 20	Nov 6
1952	Apr 15	no data	Apr 11	no data
1951	Apr 23	Oct 24	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.