Benkelman 1N, NE: frost dates by year

Last spring and first fall frost at NOAA station USC00250760, 1951 to 2022, measured from daily minimum temperatures.

Elevation 3,081 ft, 40.064, -101.544. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 6	Oct 7
Earliest	Apr 9 (2012)	Sep 3 (1974)
Latest	May 26 (1992)	Oct 28 (1963)
Trend	little change (less than half a day per decade)	0.5 days later per decade
Years with data	68	69

At 28°F (hard freeze) the median last spring date is Apr 23 and the median first fall date is Oct 16.

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

"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.