Las Animas, CO: frost dates by year

Last spring and first fall frost at NOAA station USC00054834, 1951 to 2025, measured from daily minimum temperatures.

Elevation 3,890 ft, 38.064, -103.215. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 29	Oct 10
Earliest	Apr 5 (2012)	Sep 9 (2020)
Latest	May 24 (2019)	Nov 1 (1963)
Trend	little change (less than half a day per decade)	0.6 days later per decade
Years with data	72	71

At 28°F (hard freeze) the median last spring date is Apr 16 and the median first fall date is Oct 18.

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 21	Oct 19	Apr 21	Oct 19
2024	Apr 21	Oct 31	Apr 11	Oct 31
2023	Apr 27	Oct 8	Apr 24	Oct 14
2022	Apr 18	Oct 13	Apr 16	Oct 17
2021	May 6	Oct 13	Apr 21	Oct 16
2020	Apr 20	Sep 9	Apr 17	Oct 19
2019	May 24	Oct 10	Apr 19	Oct 11
2018	Apr 27	Oct 14	Apr 15	Oct 15
2017	May 4	Oct 10	Apr 30	Oct 15
2016	May 3	Oct 7	Apr 6	Nov 9
2015	May 12	Oct 31	Apr 10	Nov 7
2014	Apr 15	Oct 29	Apr 15	Nov 4
2013	May 5	Oct 5	May 4	Oct 17
2012	Apr 5	Oct 8	Mar 22	Oct 18
2011	May 3	Oct 13	May 3	Oct 19
2010	May 14	Oct 27	Apr 8	Oct 27
2009	Apr 13	Oct 2	Apr 8	Oct 2
2008	May 11	Oct 23	May 11	Oct 23
2007	Apr 26	Oct 16	Apr 15	Oct 19
2006	Apr 26	Oct 11	Apr 8	Oct 19
2005	May 12	Oct 7	Apr 2	Oct 24
2004	Apr 23	Oct 14	Apr 13	Oct 25
2003	May 11	Oct 14	Apr 9	Oct 26
2002	Apr 22	Oct 13	Apr 21	Oct 15
2001	Apr 18	Oct 6	Mar 24	Oct 6
2000	May 13	Sep 25	Apr 16	Nov 6
1999	Apr 17	Sep 29	Apr 17	Oct 18
1998	Apr 19	Oct 6	Apr 19	Oct 18
1997	Apr 27	Oct 24	Apr 15	Oct 24
1996	Apr 30	Oct 17	Apr 20	Oct 17
1995	Apr 23	Sep 21	Apr 12	Oct 20
1994	Apr 29	Oct 19	Apr 8	Nov 5
1993	May 2	Oct 9	May 2	Oct 21
1992	Apr 24	Oct 8	Apr 3	Oct 8
1991	May 1	Oct 5	Apr 13	Oct 26
1990	May 4	Oct 9	May 4	Oct 9
1989	May 5	Oct 18	May 1	Oct 18
1988	Apr 12	Oct 23	Apr 12	Oct 29
1987	Apr 22	Oct 7	Apr 8	Oct 11
1986	no data	Oct 12	no data	Oct 12
1985	Apr 27	Sep 29	Apr 5	Sep 29
1984	no data	Sep 29	no data	Sep 29
1983	May 16	Sep 21	Apr 17	Sep 21
1982	Apr 22	Oct 7	Apr 22	Oct 11
1981	May 10	Oct 17	May 10	Oct 26
1980	Apr 18	no data	Apr 14	no data
1979	May 11	Oct 4	Apr 5	Oct 30
1978	May 8	no data	Apr 23	no data
1977	Apr 22	Oct 11	Apr 5	Oct 11
1976	Apr 25	Oct 8	Apr 7	Oct 8
1975	Apr 29	Oct 1	Apr 19	Oct 14
1974	Apr 16	Oct 15	Apr 16	Oct 31
1973	Apr 27	Oct 25	Apr 16	Oct 27
1972	May 1	Oct 19	Apr 4	Oct 24
1971	May 13	Sep 18	Apr 7	Oct 29
1970	May 2	Sep 26	Apr 24	Oct 8
1969	Apr 28	Oct 6	Mar 31	Oct 7
1968	Apr 24	Oct 18	Apr 24	Oct 18
1967	May 2	Oct 16	May 1	Oct 20
1966	May 13	Oct 14	Apr 20	Oct 15
1964	May 7	no data	Apr 14	no data
1963	Apr 30	Nov 1	Apr 23	Nov 1
1962	May 1	Oct 14	Apr 12	Oct 26
1961	Apr 27	Sep 25	Apr 16	Sep 25
1960	May 1	Oct 20	Apr 30	Oct 31
1959	Apr 23	Oct 1	Apr 22	Oct 27
1958	Apr 29	Oct 10	Apr 14	Oct 22
1957	Apr 14	Oct 25	Apr 13	Oct 26
1956	Apr 29	Oct 21	Apr 10	Oct 21
1955	Apr 28	Oct 7	Apr 28	Oct 7
1954	May 3	Oct 15	May 2	Oct 15
1953	May 14	Oct 4	Apr 20	Oct 6
1952	Apr 23	Oct 7	Apr 10	Oct 7
1951	May 3	Sep 16	Apr 22	Oct 14

"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.