Beaconsfield, IA: frost dates by year

Last spring and first fall frost at NOAA station USC00130536, 1951 to 2021, measured from daily minimum temperatures.

Elevation 1,215 ft, 40.807, -94.047. Download the data (JSON) · NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 23	Oct 11
Earliest	Mar 23 (2017)	Sep 19 (1991)
Latest	May 28 (1992)	Nov 19 (2016)
Trend	1.6 days earlier per decade	1.8 days later per decade
Years with data	64	68

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

"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 1991–2020 frost probabilities.