Frost history / Idyllwild Fire Dept, CA
Idyllwild Fire Dept, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00044211, 1953 to 2025, measured from daily minimum temperatures.
Elevation 5,380 ft, 33.757, -116.707. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 24 | Oct 12 |
| Earliest | Apr 13 (1997) | Aug 19 (1959) |
| Latest | Jun 27 (1996) | Nov 18 (2025) |
| Trend | 3.3 days earlier per decade | 3.8 days later per decade |
| Years with data | 58 | 60 |
At 28°F (hard freeze) the median last spring date is May 7 and the median first fall date is Nov 2.
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 14 | Nov 18 | Apr 4 | Dec 2 |
| 2024 | May 6 | Oct 29 | Apr 14 | Oct 30 |
| 2023 | May 26 | Oct 2 | Apr 6 | Nov 10 |
| 2022 | May 12 | Oct 24 | May 11 | Nov 3 |
| 2021 | May 23 | Oct 12 | May 22 | Oct 13 |
| 2020 | May 20 | Oct 26 | Mar 30 | Nov 9 |
| 2019 | May 24 | Sep 30 | Mar 24 | Nov 26 |
| 2018 | Apr 20 | Nov 10 | Apr 20 | Nov 10 |
| 2017 | May 15 | Sep 22 | Apr 14 | Dec 18 |
| 2016 | May 25 | Nov 1 | May 25 | Nov 17 |
| 2015 | May 16 | Nov 5 | Mar 5 | Nov 5 |
| 2014 | Apr 27 | Nov 2 | Apr 4 | Dec 26 |
| 2013 | Apr 18 | Oct 29 | Apr 18 | Dec 4 |
| 2012 | May 27 | Oct 13 | Apr 17 | Nov 9 |
| 2011 | no data | Oct 6 | no data | Nov 5 |
| 2010 | May 29 | Oct 31 | May 27 | Nov 9 |
| 2009 | no data | Oct 5 | no data | Oct 5 |
| 2008 | May 29 | no data | May 8 | no data |
| 2007 | Jun 7 | no data | May 5 | no data |
| 2005 | no data | Oct 11 | no data | Nov 17 |
| 2004 | May 27 | no data | Apr 19 | no data |
| 2003 | May 11 | Nov 1 | May 10 | Nov 2 |
| 2002 | May 22 | Oct 2 | May 2 | Oct 16 |
| 2001 | Apr 23 | Nov 13 | Apr 23 | Nov 26 |
| 2000 | May 17 | Sep 2 | Apr 19 | Oct 13 |
| 1999 | no data | Nov 9 | no data | Nov 18 |
| 1997 | Apr 13 | Oct 8 | Apr 12 | Oct 12 |
| 1996 | Jun 27 | Oct 20 | Apr 19 | Oct 28 |
| 1995 | Jun 17 | Nov 5 | Jun 9 | Dec 16 |
| 1994 | May 20 | Oct 6 | May 20 | Oct 17 |
| 1993 | Jun 8 | Sep 18 | Apr 6 | Oct 18 |
| 1992 | Jun 15 | no data | Mar 22 | no data |
| 1991 | May 21 | Oct 24 | May 11 | Oct 28 |
| 1990 | Jun 15 | Nov 2 | Mar 16 | Nov 2 |
| 1989 | May 14 | Oct 3 | May 12 | Oct 26 |
| 1988 | Jun 7 | Nov 8 | Jun 7 | Nov 15 |
| 1987 | May 24 | Nov 3 | May 21 | Nov 15 |
| 1986 | May 12 | Sep 21 | May 7 | Nov 7 |
| 1985 | May 12 | Sep 10 | Mar 31 | Nov 10 |
| 1984 | Jun 15 | Oct 16 | Apr 29 | Nov 7 |
| 1983 | Jun 2 | Oct 4 | May 11 | Nov 19 |
| 1982 | Jun 6 | Sep 28 | May 12 | Sep 30 |
| 1981 | May 21 | Oct 12 | Apr 8 | Oct 12 |
| 1980 | Jun 1 | Oct 16 | Jun 1 | Oct 17 |
| 1979 | Jun 18 | Oct 29 | May 9 | Oct 30 |
| 1978 | May 26 | Oct 31 | Apr 17 | Nov 2 |
| 1977 | May 26 | Oct 30 | May 18 | Oct 30 |
| 1976 | Jun 11 | Oct 25 | Apr 28 | Nov 11 |
| 1975 | May 22 | Oct 8 | May 21 | Oct 13 |
| 1974 | May 20 | Oct 29 | May 20 | Nov 4 |
| 1973 | May 6 | Oct 3 | May 1 | Oct 10 |
| 1972 | May 22 | Sep 12 | May 21 | Oct 29 |
| 1971 | no data | Sep 26 | no data | Oct 1 |
| 1970 | Jun 15 | Oct 23 | May 7 | Oct 27 |
| 1969 | May 15 | Sep 21 | May 7 | Sep 21 |
| 1966 | Jun 8 | Sep 12 | May 31 | Oct 13 |
| 1965 | Jun 26 | Sep 5 | Jun 26 | Sep 7 |
| 1964 | Jun 10 | no data | Jun 10 | no data |
| 1962 | Jun 4 | Oct 5 | May 26 | Nov 13 |
| 1961 | Jun 2 | Oct 8 | Jun 1 | Oct 9 |
| 1960 | May 25 | Oct 1 | May 24 | Oct 8 |
| 1959 | no data | Aug 19 | no data | Sep 16 |
| 1958 | no data | Sep 25 | no data | Nov 1 |
| 1957 | May 24 | no data | May 13 | no data |
| 1955 | Jun 1 | no data | Apr 30 | no data |
| 1954 | no data | Oct 4 | no data | Oct 24 |
| 1953 | no data | Oct 20 | no data | Oct 22 |
"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.