Kewanee 1 E, IL: frost dates by year

Last spring and first fall frost at NOAA station USC00114710, 1951 to 2025, measured from daily minimum temperatures.

Elevation 780 ft, 41.243, -89.900. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 23	Oct 13
Earliest	Mar 24 (2017)	Sep 20 (1956)
Latest	May 21 (2002)	Nov 12 (2016)
Trend	little change (less than half a day per decade)	little change (less than half a day per decade)
Years with data	64	68

At 28°F (hard freeze) the median last spring date is Apr 13 and the median first fall date is Oct 25.

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

"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.