Butte, NE: frost dates by year

Last spring and first fall frost at NOAA station USC00251365, 1951 to 2021, measured from daily minimum temperatures.

Elevation 1,806 ft, 42.913, -98.851. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 7	Oct 4
Earliest	Apr 10 (2003)	Sep 6 (1956)
Latest	May 26 (1992)	Oct 28 (1963)
Trend	little change (less than half a day per decade)	1.2 days later per decade
Years with data	68	69

At 28°F (hard freeze) the median last spring date is Apr 24 and the median first fall date is Oct 15.

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

"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.