Frost history / De Sabla, CA
De Sabla, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00042402, 1953 to 2019, measured from daily minimum temperatures.
Elevation 2,710 ft, 39.872, -121.611. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 28 | Nov 5 |
| Earliest | Mar 13 (1990) | Sep 20 (1982) |
| Latest | Jun 18 (1979) | Dec 20 (2002) |
| Trend | 3.0 days earlier per decade | little change (less than half a day per decade) |
| Years with data | 62 | 58 |
At 28°F (hard freeze) the median last spring date is Mar 31 and the median first fall date is Nov 22.
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 |
|---|---|---|---|---|
| 2019 | Apr 10 | no data | Mar 13 | no data |
| 2018 | Apr 19 | no data | Mar 18 | no data |
| 2017 | Apr 15 | Sep 22 | Mar 1 | Sep 22 |
| 2016 | May 23 | Oct 19 | May 22 | Dec 2 |
| 2015 | Apr 8 | Nov 3 | Jan 3 | Nov 7 |
| 2014 | Apr 26 | Nov 16 | Feb 6 | Dec 25 |
| 2012 | Apr 14 | no data | Apr 6 | no data |
| 2011 | no data | Nov 4 | no data | Dec 6 |
| 2010 | no data | Nov 8 | no data | Nov 24 |
| 2009 | Apr 16 | Oct 28 | Apr 15 | Nov 9 |
| 2008 | Apr 30 | Dec 8 | Apr 21 | Dec 13 |
| 2007 | Apr 18 | Nov 20 | Apr 18 | Dec 1 |
| 2006 | Apr 19 | Nov 1 | Mar 21 | Nov 24 |
| 2005 | Apr 15 | Oct 27 | Apr 14 | Nov 27 |
| 2004 | Mar 26 | Oct 21 | Feb 28 | Nov 21 |
| 2003 | May 9 | Oct 30 | Feb 28 | Nov 22 |
| 2002 | Apr 17 | Dec 20 | Mar 18 | Dec 22 |
| 2001 | Apr 22 | Nov 23 | Apr 10 | Dec 4 |
| 2000 | May 11 | Nov 9 | May 11 | Nov 11 |
| 1999 | Apr 28 | Nov 18 | Apr 10 | Nov 22 |
| 1998 | May 12 | Nov 12 | Mar 7 | Dec 5 |
| 1997 | Apr 10 | no data | Mar 5 | no data |
| 1996 | Apr 21 | no data | Apr 20 | no data |
| 1995 | Apr 21 | Nov 26 | Apr 21 | Dec 16 |
| 1994 | Apr 25 | Oct 17 | Mar 23 | Nov 2 |
| 1993 | Apr 12 | Oct 17 | Mar 10 | Nov 23 |
| 1992 | Apr 7 | Nov 9 | Mar 21 | Nov 9 |
| 1991 | May 9 | Oct 23 | Apr 11 | Oct 27 |
| 1990 | Mar 13 | no data | Mar 13 | no data |
| 1989 | Apr 27 | Nov 27 | Mar 3 | Nov 28 |
| 1988 | Jun 10 | Nov 9 | May 1 | Nov 19 |
| 1987 | no data | Nov 15 | no data | Nov 29 |
| 1986 | May 7 | Sep 21 | Mar 15 | Dec 1 |
| 1985 | Mar 30 | Nov 9 | Mar 29 | Nov 9 |
| 1984 | May 15 | Sep 24 | Apr 27 | Oct 15 |
| 1983 | May 9 | Nov 7 | Apr 13 | Nov 21 |
| 1982 | Jun 5 | Sep 20 | Apr 16 | Oct 7 |
| 1981 | Apr 12 | Oct 12 | Mar 31 | Oct 12 |
| 1980 | no data | Nov 12 | no data | Dec 6 |
| 1979 | Jun 18 | no data | May 8 | no data |
| 1978 | May 16 | Nov 1 | Apr 21 | Nov 12 |
| 1977 | May 17 | Nov 6 | Mar 31 | Nov 19 |
| 1976 | Apr 16 | Nov 27 | Apr 1 | Nov 28 |
| 1975 | May 6 | Oct 23 | Apr 26 | Nov 9 |
| 1974 | May 19 | Nov 9 | Mar 9 | Dec 22 |
| 1973 | Apr 18 | no data | Apr 18 | no data |
| 1972 | Apr 29 | Oct 29 | Apr 13 | Oct 29 |
| 1971 | May 17 | Sep 30 | Apr 24 | Oct 28 |
| 1970 | May 12 | Oct 24 | Apr 29 | Dec 14 |
| 1969 | Apr 25 | Nov 18 | Mar 14 | Dec 26 |
| 1968 | May 15 | Oct 15 | Apr 21 | Nov 1 |
| 1967 | May 12 | Nov 22 | Apr 30 | Nov 30 |
| 1966 | Apr 20 | Oct 13 | Mar 20 | Nov 23 |
| 1965 | May 5 | Oct 16 | Mar 18 | Nov 28 |
| 1964 | May 6 | Nov 10 | May 4 | Nov 13 |
| 1963 | Apr 22 | Nov 16 | Apr 21 | Nov 21 |
| 1962 | May 20 | Nov 29 | Mar 13 | Nov 29 |
| 1961 | May 7 | Oct 22 | Mar 3 | Oct 22 |
| 1960 | May 22 | Nov 8 | Feb 24 | Nov 15 |
| 1959 | May 2 | Nov 16 | Feb 13 | Dec 13 |
| 1958 | Apr 24 | Nov 15 | Mar 30 | Nov 15 |
| 1957 | Apr 1 | Nov 4 | Mar 22 | Nov 16 |
| 1956 | Apr 13 | Oct 24 | Apr 2 | Oct 24 |
| 1955 | May 15 | Nov 1 | Apr 27 | Nov 12 |
| 1954 | May 1 | Oct 24 | Mar 12 | Nov 30 |
| 1953 | May 27 | Nov 17 | Apr 12 | Nov 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.