Norwalk Wwtp, OH: frost dates by year

Last spring and first fall frost at NOAA station USC00336118, 1951 to 2025, measured from daily minimum temperatures.

Elevation 670 ft, 41.267, -82.617. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 28	Oct 18
Earliest	Apr 2 (2019)	Sep 23 (1974)
Latest	May 24 (1956)	Nov 21 (1985)
Trend	1.9 days earlier per decade	2.2 days later per decade
Years with data	70	71

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