Frost history / Placerville, CA
Placerville, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00046960, 1952 to 2010, measured from daily minimum temperatures.
Elevation 1,850 ft, 38.696, -120.824. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 20 | Nov 10 |
| Earliest | Feb 15 (1992) | Oct 8 (1982) |
| Latest | Jun 12 (1952) | Dec 17 (1995) |
| Trend | 6.4 days earlier per decade | 3.6 days later per decade |
| Years with data | 44 | 50 |
At 28°F (hard freeze) the median last spring date is Mar 13 and the median first fall date is Nov 26.
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 |
|---|---|---|---|---|
| 2010 | May 11 | Nov 24 | Mar 9 | Nov 24 |
| 2009 | Apr 29 | Nov 19 | Mar 10 | Dec 6 |
| 2008 | Apr 21 | Dec 4 | Jan 29 | Dec 14 |
| 2007 | no data | Nov 23 | no data | Dec 21 |
| 2006 | Mar 19 | Nov 28 | Mar 4 | Nov 29 |
| 2005 | no data | Nov 28 | no data | Dec 17 |
| 2004 | Mar 2 | no data | none | no data |
| 2003 | Apr 28 | Nov 4 | none | Nov 22 |
| 1997 | Feb 28 | Dec 9 | Jan 14 | Dec 23 |
| 1996 | Mar 6 | Oct 26 | none | none |
| 1995 | Mar 26 | Dec 17 | Jan 17 | Dec 18 |
| 1994 | Mar 23 | Nov 3 | Feb 12 | Nov 18 |
| 1993 | Feb 28 | Nov 23 | Feb 21 | Nov 26 |
| 1992 | Feb 15 | Nov 20 | Jan 24 | Nov 23 |
| 1991 | no data | Nov 15 | no data | Nov 30 |
| 1990 | Mar 15 | Nov 2 | Mar 13 | Nov 27 |
| 1989 | Mar 26 | Nov 27 | Mar 3 | Nov 27 |
| 1988 | Mar 14 | Nov 18 | Mar 14 | Nov 18 |
| 1987 | no data | Nov 15 | no data | Nov 29 |
| 1986 | May 7 | Nov 7 | Feb 10 | Dec 12 |
| 1985 | Mar 31 | Nov 9 | Mar 30 | Nov 11 |
| 1984 | Apr 29 | Oct 15 | Feb 23 | Nov 11 |
| 1983 | no data | Nov 8 | no data | Nov 21 |
| 1982 | no data | Oct 8 | no data | Nov 9 |
| 1981 | no data | Oct 16 | no data | Dec 2 |
| 1980 | Apr 7 | no data | Mar 15 | no data |
| 1979 | May 10 | Oct 30 | Mar 2 | Nov 19 |
| 1976 | Apr 17 | Nov 26 | Apr 16 | Nov 27 |
| 1975 | Apr 26 | Oct 23 | Apr 1 | Nov 18 |
| 1974 | May 18 | Nov 23 | Mar 4 | Dec 22 |
| 1973 | Apr 20 | Nov 3 | Mar 18 | Nov 4 |
| 1972 | Apr 19 | Oct 29 | Mar 27 | Oct 30 |
| 1971 | Apr 25 | Oct 17 | Mar 31 | Oct 29 |
| 1970 | Apr 29 | Oct 27 | Apr 28 | Dec 13 |
| 1969 | Apr 15 | Nov 17 | Mar 14 | Nov 17 |
| 1968 | Apr 22 | Nov 13 | Apr 21 | Nov 29 |
| 1967 | May 1 | Nov 26 | Mar 5 | Dec 2 |
| 1966 | Mar 22 | Nov 22 | Mar 20 | Nov 24 |
| 1965 | May 7 | Nov 10 | Mar 29 | Nov 26 |
| 1964 | May 7 | Nov 11 | Apr 24 | Nov 14 |
| 1963 | Apr 22 | Nov 7 | Apr 2 | Dec 4 |
| 1962 | Mar 24 | Nov 17 | Mar 13 | Nov 29 |
| 1961 | Apr 25 | Oct 22 | Feb 26 | Nov 17 |
| 1960 | May 22 | Nov 15 | Mar 10 | Nov 28 |
| 1959 | Mar 27 | Oct 29 | Feb 15 | Dec 5 |
| 1958 | Apr 25 | Nov 12 | Mar 11 | Nov 15 |
| 1957 | Apr 1 | Nov 3 | Mar 22 | Nov 3 |
| 1956 | no data | Oct 24 | no data | Oct 24 |
| 1955 | May 14 | Oct 27 | Apr 27 | Nov 1 |
| 1954 | May 1 | Oct 25 | Mar 15 | Nov 29 |
| 1953 | Apr 11 | Nov 17 | Apr 11 | Nov 18 |
| 1952 | Jun 12 | Nov 2 | Mar 23 | Nov 17 |
"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.