Paris Stp, IL: frost dates by year

Last spring and first fall frost at NOAA station USC00116610, 1951 to 2025, measured from daily minimum temperatures.

Elevation 649 ft, 39.619, -87.667. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 18	Oct 19
Earliest	Mar 25 (1998)	Sep 20 (1991)
Latest	May 27 (1961)	Nov 15 (1970)
Trend	0.6 days earlier per decade	little change (less than half a day per decade)
Years with data	72	73

At 28°F (hard freeze) the median last spring date is Apr 8 and the median first fall date is Nov 3.

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

"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.