Hanksville, UT: frost dates by year

Last spring and first fall frost at NOAA station USW00023170, 1951 to 2021, measured from daily minimum temperatures.

Elevation 4,308 ft, 38.371, -110.715. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 3	Oct 7
Earliest	Mar 31 (2004)	Sep 17 (1968)
Latest	Jun 14 (1976)	Nov 5 (1957)
Trend	little change (less than half a day per decade)	1.7 days earlier per decade
Years with data	67	66

At 28°F (hard freeze) the median last spring date is Apr 19 and the median first fall date is Oct 17.

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

"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.