Portales, NM: frost dates by year

Last spring and first fall frost at NOAA station USC00297008, 1951 to 2025, measured from daily minimum temperatures.

Elevation 4,010 ft, 34.174, -103.352. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 18	Oct 19
Earliest	Mar 29 (2006)	Sep 21 (1983)
Latest	May 19 (1952)	Nov 18 (2016)
Trend	1.1 days earlier per decade	1.0 days later per decade
Years with data	66	69

At 28°F (hard freeze) the median last spring date is Apr 9 and the median first fall date is Oct 31.

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 30	Oct 19	Apr 6	Oct 19
2024	Apr 10	Oct 31	Mar 26	Oct 31
2023	Apr 29	Oct 29	Mar 29	Oct 29
2022	Apr 14	Nov 11	Apr 14	Nov 12
2021	Apr 21	Oct 16	Apr 21	Nov 4
2020	Apr 17	Oct 24	Apr 17	Oct 26
2019	Apr 14	Oct 11	Apr 1	Oct 25
2018	Apr 15	Oct 15	Apr 15	Nov 10
2017	Apr 5	Oct 27	Mar 2	Nov 20
2016	no data	Nov 18	no data	Nov 19
2015	Apr 29	no data	Mar 26	no data
2014	May 14	Oct 14	Apr 15	Nov 6
2013	May 3	Oct 19	May 3	Oct 19
2012	Apr 4	Oct 26	Mar 20	Oct 27
2011	May 3	Oct 19	Mar 14	Nov 3
2010	Apr 8	Oct 28	Apr 8	Oct 28
2009	no data	Oct 11	no data	Oct 30
2008	Apr 18	Oct 23	Apr 18	Oct 23
2007	Apr 14	Oct 23	Apr 14	Oct 23
2006	Mar 29	Oct 23	Mar 29	Nov 11
2005	Apr 13	Nov 1	Apr 12	Nov 16
2004	Apr 13	Oct 14	Feb 26	Nov 3
2003	Apr 20	Oct 26	Apr 8	Oct 26
2002	Apr 4	Oct 30	Apr 3	Nov 6
2001	Apr 25	Oct 16	Mar 16	Nov 9
2000	Apr 8	Sep 25	Apr 4	Nov 7
1999	Apr 17	Sep 29	Apr 16	Oct 31
1998	Apr 29	Oct 18	Apr 19	Dec 8
1997	Apr 27	Oct 25	Apr 13	Oct 26
1996	Apr 20	Oct 18	Apr 15	Oct 22
1995	Apr 27	Oct 20	Apr 23	Nov 3
1994	Apr 12	no data	Apr 6	no data
1993	Apr 15	Oct 21	Mar 17	Oct 30
1992	Apr 3	Oct 8	Mar 23	Oct 8
1991	May 1	no data	Apr 13	no data
1990	Apr 6	Oct 21	Mar 25	Oct 21
1989	Apr 28	Oct 18	Apr 10	Oct 20
1988	Apr 14	Nov 1	Apr 14	Nov 6
1987	Apr 22	Nov 9	Apr 22	Nov 10
1986	no data	Oct 12	no data	Oct 14
1985	Apr 5	Nov 1	Mar 29	Nov 1
1984	no data	Oct 19	no data	Nov 10
1983	Apr 18	Sep 21	Apr 10	Nov 10
1982	Apr 27	Oct 13	Apr 11	Oct 20
1981	May 14	Oct 26	Apr 5	Oct 26
1980	Apr 27	Oct 19	Apr 14	Oct 24
1979	Apr 13	Oct 22	Apr 4	Nov 2
1978	Apr 11	Nov 7	Mar 24	Nov 15
1977	Apr 5	Nov 2	Apr 5	Nov 2
1976	Apr 3	Oct 8	Mar 31	Oct 8
1975	no data	Oct 24	no data	Nov 10
1974	Apr 22	Oct 15	Apr 15	Nov 14
1973	Apr 27	Oct 28	Apr 19	Nov 15
1972	Apr 21	Oct 31	Apr 1	Oct 31
1971	Apr 14	Oct 31	Apr 6	Oct 31
1970	May 2	no data	May 1	no data
1969	Apr 19	Oct 13	Mar 27	Oct 13
1968	no data	Oct 18	no data	Oct 18
1967	May 15	Oct 16	May 1	Oct 27
1966	Apr 20	Oct 15	Apr 20	Oct 15
1965	May 9	Oct 1	Mar 30	Nov 6
1964	May 9	Oct 14	Apr 8	Nov 13
1963	Apr 23	Nov 2	Mar 26	Nov 18
1962	May 1	Oct 29	Apr 7	Nov 8
1961	Apr 16	Oct 3	Apr 16	Nov 3
1960	May 7	Oct 31	Apr 25	Nov 15
1959	Apr 14	Oct 18	Mar 29	Oct 27
1958	Apr 14	Oct 22	Apr 14	Oct 31
1957	Apr 14	Oct 27	Apr 14	Oct 27
1955	Apr 20	Oct 7	Apr 14	Oct 24
1954	no data	Oct 15	no data	Oct 27
1952	May 19	Oct 6	Apr 10	Oct 22
1951	Apr 16	Oct 7	Apr 13	Nov 1

"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.