Winamac 2SSE, IN: frost dates by year

Last spring and first fall frost at NOAA station USC00129670, 1951 to 2025, measured from daily minimum temperatures.

Elevation 690 ft, 41.027, -86.587. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 27	Oct 13
Earliest	Apr 9 (1987)	Sep 13 (1964)
Latest	May 30 (1961)	Nov 12 (2016)
Trend	1.7 days earlier per decade	2.2 days later per decade
Years with data	73	73

At 28°F (hard freeze) the median last spring date is Apr 16 and the median first fall date is Oct 24.

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 17	Oct 24	Apr 12	Nov 2
2024	Apr 26	Oct 17	Apr 6	Oct 27
2023	Apr 27	Oct 31	Apr 27	Oct 31
2022	Apr 28	Oct 8	Apr 17	Oct 8
2021	May 11	Nov 1	Apr 22	Nov 1
2020	May 9	Oct 4	Apr 17	Oct 4
2019	Apr 22	Oct 12	Apr 3	Nov 1
2018	Apr 30	Oct 12	Apr 30	Oct 25
2017	May 8	Oct 25	Mar 24	Nov 8
2016	Apr 15	Nov 12	Apr 15	Nov 12
2015	Apr 25	Oct 17	Apr 23	Oct 18
2014	Apr 23	Nov 1	Apr 16	Nov 1
2013	Apr 21	Oct 22	Apr 5	Oct 22
2012	Apr 27	Oct 6	Apr 14	Nov 1
2011	Apr 21	Oct 22	Apr 2	Nov 5
2010	Apr 28	Oct 5	Mar 27	Nov 3
2009	Apr 23	Oct 11	Apr 9	Nov 1
2008	May 1	Oct 22	Apr 16	Oct 29
2007	Apr 18	Oct 28	Apr 11	Nov 3
2006	Apr 10	Oct 12	Apr 9	Oct 15
2005	May 4	Oct 23	Mar 25	Nov 11
2004	May 3	no data	Apr 14	no data
2003	Apr 27	no data	Apr 10	no data
2002	May 21	Oct 14	Apr 7	Oct 14
2001	Apr 19	Oct 7	Apr 18	Oct 7
2000	Apr 13	Oct 7	Apr 12	Oct 7
1999	Apr 20	Oct 19	Mar 29	Oct 25
1998	Apr 17	Oct 23	Mar 25	Nov 4
1997	Apr 26	Oct 15	Apr 26	Oct 22
1996	May 13	Oct 11	Apr 17	Oct 31
1995	Apr 11	Sep 23	Apr 6	Nov 3
1994	Apr 23	Oct 27	Apr 8	Oct 27
1993	Apr 22	Sep 30	Apr 22	Nov 1
1992	Apr 28	Oct 17	Apr 28	Oct 17
1991	Apr 22	Oct 7	Apr 2	Oct 16
1990	Apr 19	Oct 23	Apr 19	Oct 23
1989	May 7	Oct 4	Apr 19	Oct 9
1988	Apr 25	Oct 6	Apr 19	Oct 13
1987	Apr 9	Oct 8	Apr 9	Oct 12
1986	Apr 24	Oct 15	Apr 23	Nov 3
1985	Apr 11	Oct 2	Apr 10	Oct 2
1984	May 16	Oct 1	Apr 7	Nov 2
1983	Apr 20	Oct 14	Apr 20	Nov 4
1982	Apr 21	Oct 17	Apr 11	Oct 23
1981	Apr 21	Oct 19	Mar 25	Oct 24
1980	Apr 26	Oct 5	Apr 25	Oct 29
1979	May 1	Oct 10	Apr 10	Oct 14
1978	May 3	Oct 15	Apr 22	Oct 24
1977	Apr 29	Oct 13	Apr 9	Nov 12
1976	May 8	Oct 18	Apr 27	Oct 18
1975	Apr 21	Oct 26	Apr 13	Nov 14
1974	May 7	Sep 23	May 7	Oct 3
1973	no data	Oct 17	no data	Nov 5
1972	no data	Oct 18	no data	Oct 19
1971	May 4	Nov 1	Apr 30	Nov 4
1970	May 6	Oct 16	Apr 11	Nov 1
1969	Apr 30	Oct 15	Mar 31	Oct 23
1968	May 6	Oct 4	May 6	Oct 30
1967	May 3	Oct 12	Apr 28	Nov 4
1966	May 29	Oct 2	May 10	Oct 6
1965	Apr 29	Oct 4	Apr 3	Oct 5
1964	Apr 15	Sep 13	Apr 9	Oct 7
1963	May 23	Oct 14	May 23	Oct 30
1962	Apr 20	Sep 21	Apr 20	Sep 21
1961	May 30	Oct 26	Apr 16	Oct 27
1960	May 14	Oct 20	Apr 10	Oct 21
1959	Apr 23	Sep 18	Apr 22	Sep 18
1958	May 7	Oct 1	May 7	Oct 2
1957	May 6	Sep 28	Apr 15	Oct 11
1956	May 24	Oct 9	Apr 24	Oct 10
1955	May 18	Oct 25	May 9	Oct 25
1954	May 21	Sep 23	May 21	Oct 19
1953	Apr 21	Oct 7	Apr 21	Oct 8
1952	Apr 16	Oct 3	Apr 16	Oct 6
1951	Apr 23	Sep 29	Apr 20	Sep 29

"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.