Rockville, IN: frost dates by year

Last spring and first fall frost at NOAA station USC00127522, 1951 to 2025, measured from daily minimum temperatures.

Elevation 689 ft, 39.759, -87.227. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 23	Oct 16
Earliest	Mar 27 (1999)	Sep 23 (1995)
Latest	May 19 (2002)	Nov 10 (2016)
Trend	0.7 days earlier per decade	0.7 days earlier per decade
Years with data	69	67

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