Urbana Wwtp, OH: frost dates by year

Last spring and first fall frost at NOAA station USC00338552, 1951 to 2025, measured from daily minimum temperatures.

Elevation 1,019 ft, 40.099, -83.782. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 24	Oct 14
Earliest	Apr 3 (2019)	Sep 8 (1956)
Latest	May 27 (1961)	Nov 5 (2016)
Trend	2.0 days earlier per decade	2.8 days later per decade
Years with data	71	68

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