Jerome, AZ: frost dates by year

Last spring and first fall frost at NOAA station USC00024453, 1951 to 2025, measured from daily minimum temperatures.

Elevation 4,950 ft, 34.752, -112.111. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 4	Nov 18
Earliest	Feb 24 (2015)	Oct 17 (1980)
Latest	May 5 (1974)	Dec 25 (2014)
Trend	3.3 days earlier per decade	1.9 days later per decade
Years with data	60	61

At 28°F (hard freeze) the median last spring date is Mar 11 and the median first fall date is Nov 30.

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 19	no data	Mar 15	no data
2024	Apr 6	Nov 18	Feb 12	none
2023	Apr 12	Nov 26	Apr 5	none
2022	Mar 11	no data	Mar 11	no data
2021	Mar 22	Dec 11	Mar 16	Dec 11
2020	no data	Oct 26	no data	Oct 27
2019	Mar 14	Oct 30	Feb 25	Nov 30
2018	Mar 1	Nov 13	Feb 28	Dec 3
2017	Feb 26	Dec 21	Jan 28	Dec 21
2016	Mar 30	Nov 28	Feb 5	Nov 30
2015	Feb 24	Nov 16	Jan 6	Nov 30
2014	Apr 4	Dec 25	none	Dec 26
2013	Mar 10	Dec 5	Mar 9	Dec 5
2012	Apr 15	Nov 11	Mar 20	Nov 11
2011	no data	Nov 5	no data	Dec 4
2008	Mar 18	Dec 8	Mar 18	Dec 14
2007	Mar 5	Dec 2	Mar 3	Dec 15
2006	Apr 6	Nov 29	Mar 22	Nov 29
2005	Mar 15	Nov 27	Jan 8	Nov 27
2004	Mar 2	Nov 29	Feb 28	Nov 29
2003	Mar 5	Nov 23	Feb 10	Nov 23
2002	Mar 19	Dec 18	Mar 3	Dec 19
2000	Apr 1	Nov 8	Mar 22	Nov 12
1999	Apr 9	Dec 4	Apr 5	none
1998	Apr 16	Nov 10	Apr 4	Dec 6
1997	Apr 5	Dec 9	Mar 2	Dec 9
1996	Mar 30	Oct 26	Mar 1	Dec 18
1995	Apr 19	Dec 17	Jan 18	none
1994	Apr 28	Nov 4	Feb 23	Nov 19
1993	Mar 4	Nov 6	Jan 12	none
1992	Mar 10	Nov 22	Jan 13	Dec 14
1991	Mar 28	Oct 28	Mar 28	Nov 28
1990	no data	Nov 26	no data	Nov 27
1989	Mar 26	Nov 27	Mar 4	Dec 10
1988	Apr 23	no data	Jan 22	no data
1985	no data	Nov 12	no data	Nov 13
1984	Apr 29	Nov 25	Mar 5	Nov 26
1983	Apr 14	Nov 19	Mar 25	Nov 22
1982	Apr 2	no data	Mar 20	no data
1981	Apr 4	no data	Mar 7	no data
1980	no data	Oct 17	no data	Dec 9
1979	Apr 11	Nov 9	Feb 24	Nov 20
1978	no data	Nov 12	no data	Dec 3
1976	Apr 19	Nov 27	Apr 18	Nov 27
1975	Apr 27	Nov 19	Apr 8	Nov 27
1974	May 5	Oct 30	Mar 4	Dec 1
1973	Apr 20	Nov 19	Mar 29	Nov 20
1972	Apr 14	Oct 30	Apr 14	Oct 31
1971	Apr 22	Oct 29	Mar 6	Oct 29
1970	Apr 29	Dec 1	Apr 29	Dec 21
1969	Mar 24	Nov 18	Mar 24	Nov 18
1968	Apr 22	Nov 29	Jan 8	Nov 30
1967	no data	Nov 29	no data	Dec 9
1965	Apr 12	no data	Apr 10	no data
1964	May 5	no data	Apr 3	no data
1963	no data	Nov 17	no data	Dec 11
1962	Mar 24	Nov 17	Mar 15	Dec 25
1961	Mar 30	Oct 29	Mar 30	Oct 30
1960	Mar 17	Nov 27	Feb 26	Dec 6
1959	Mar 11	Oct 31	Mar 5	Dec 14
1958	Apr 8	Nov 16	Mar 12	Nov 16
1957	Apr 22	Nov 5	Mar 23	Nov 17
1956	Apr 15	Oct 30	Apr 2	Nov 2
1955	Apr 4	Nov 15	Mar 21	Nov 16
1954	Mar 26	Dec 11	Mar 26	Dec 27
1953	Apr 9	Nov 18	Mar 4	Nov 19
1952	Mar 24	Nov 16	Mar 23	Nov 24
1951	May 1	Nov 2	Mar 18	Nov 25

"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.