Tuscola, IL: frost dates by year

Last spring and first fall frost at NOAA station USC00118684, 1951 to 2025, measured from daily minimum temperatures.

Elevation 651 ft, 39.795, -88.291. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 18	Oct 17
Earliest	Mar 29 (1999)	Sep 20 (1991)
Latest	May 28 (1965)	Nov 12 (2016)
Trend	2.0 days earlier per decade	little change (less than half a day per decade)
Years with data	74	71

At 28°F (hard freeze) the median last spring date is Apr 6 and the median first fall date is Oct 31.

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