Holyoke, CO: frost dates by year

Last spring and first fall frost at NOAA station USC00054082, 1951 to 2025, measured from daily minimum temperatures.

Elevation 3,780 ft, 40.545, -102.341. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 6	Oct 5
Earliest	Apr 22 (1987)	Sep 9 (2020)
Latest	Jun 3 (1954)	Oct 28 (1963)
Trend	little change (less than half a day per decade)	0.8 days later per decade
Years with data	72	72

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

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	May 3	Oct 19	Apr 20	Oct 19
2024	May 4	Oct 1	Apr 21	Oct 25
2023	May 2	Oct 7	May 2	Oct 14
2022	May 22	Oct 8	May 3	Oct 17
2021	May 12	Oct 14	Apr 30	Oct 16
2020	May 11	Sep 9	May 11	Oct 12
2019	May 24	Oct 3	May 10	Oct 4
2018	Apr 27	Oct 5	Apr 25	Oct 5
2017	May 24	Oct 9	May 4	Oct 10
2016	May 2	Oct 5	May 2	Oct 20
2015	May 20	Oct 16	Apr 21	Oct 16
2014	May 15	Sep 12	May 2	Oct 28
2013	May 5	Oct 6	May 5	Oct 16
2012	May 9	Oct 4	Apr 9	Oct 7
2011	May 15	Oct 13	May 3	Oct 19
2010	May 13	Oct 13	May 13	Oct 28
2009	Apr 28	Oct 3	Apr 11	Oct 3
2008	May 14	Oct 14	May 11	Oct 14
2007	no data	Oct 16	no data	Oct 16
2006	May 11	Sep 29	Apr 27	Oct 18
2005	May 3	Oct 6	May 2	Oct 8
2004	May 2	Oct 14	Apr 14	Oct 31
2003	May 20	Oct 1	Apr 9	Oct 2
2002	May 25	Oct 13	May 9	Oct 15
2001	Apr 23	Oct 6	Apr 23	Oct 16
2000	May 13	no data	Apr 17	no data
1999	May 20	Sep 29	Apr 17	Oct 2
1998	Apr 30	Oct 18	Apr 29	Oct 21
1997	May 12	Oct 9	May 3	Oct 25
1996	Apr 29	Oct 18	Apr 29	Oct 18
1995	May 18	Sep 22	Apr 27	Oct 20
1994	May 1	Oct 16	Apr 28	Oct 21
1993	May 2	Sep 14	Apr 21	Oct 8
1992	Apr 26	Oct 8	Apr 26	Oct 16
1991	May 5	Oct 6	May 1	Oct 26
1990	May 10	Oct 8	Apr 12	Oct 9
1989	no data	Oct 17	no data	Oct 19
1988	May 4	Oct 24	Apr 26	Oct 28
1987	Apr 22	Oct 7	Apr 11	Oct 11
1985	Apr 27	no data	Apr 8	no data
1984	Apr 30	Sep 25	Apr 28	Sep 30
1983	May 15	Sep 20	Apr 16	Sep 20
1982	May 6	Oct 6	Apr 30	Oct 7
1981	May 11	Sep 17	May 10	Oct 22
1980	Apr 25	Oct 10	Apr 14	Oct 11
1979	May 11	Oct 4	May 11	Nov 1
1978	May 9	Oct 3	Apr 25	Oct 6
1977	Apr 26	Oct 2	Apr 21	Oct 11
1976	May 17	Sep 28	May 6	Sep 28
1975	Apr 30	Sep 21	Apr 20	Oct 17
1974	May 3	Sep 28	Apr 17	Oct 15
1973	May 3	Oct 11	Apr 16	Oct 27
1972	May 7	Sep 26	May 3	Oct 18
1971	May 12	Sep 19	Apr 27	Sep 19
1970	May 2	Sep 26	May 1	Oct 7
1969	Apr 28	Oct 5	Apr 28	Oct 12
1968	May 19	Oct 4	Apr 28	Oct 18
1967	May 6	Sep 27	May 4	Oct 16
1966	May 13	Oct 1	May 13	Oct 14
1965	May 10	Sep 16	May 10	Nov 4
1964	May 4	Sep 27	Apr 8	Sep 27
1963	May 22	Oct 28	May 22	Oct 28
1962	May 1	Oct 16	Apr 8	Oct 18
1961	Apr 29	Sep 25	Apr 25	Oct 19
1960	May 6	Sep 27	Apr 30	Sep 30
1959	Apr 27	Oct 1	Apr 27	Oct 11
1958	Apr 30	Sep 30	Apr 30	Oct 1
1957	May 17	Sep 22	Apr 14	Oct 24
1956	May 14	Oct 14	Apr 30	Oct 26
1955	Apr 28	Oct 7	Apr 28	Oct 7
1954	Jun 3	Oct 14	May 3	Oct 14
1953	May 14	Oct 8	May 14	Oct 26
1952	May 11	Oct 2	Apr 23	Oct 6
1951	Jun 2	Sep 27	Apr 22	Oct 18

"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.