Frost history / East Park Rsvr, CA
East Park Rsvr, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00042640, 1951 to 2003, measured from daily minimum temperatures.
Elevation 1,205 ft, 39.359, -122.518. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 20 | Nov 7 |
| Earliest | Mar 1 (1993) | Oct 1 (1971) |
| Latest | Jun 8 (1995) | Nov 28 (1976) |
| Trend | 0.5 days earlier per decade | 0.7 days earlier per decade |
| Years with data | 48 | 48 |
At 28°F (hard freeze) the median last spring date is Mar 14 and the median first fall date is Nov 20.
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 |
|---|---|---|---|---|
| 2003 | Apr 5 | no data | Apr 3 | no data |
| 2002 | Apr 18 | Oct 31 | Apr 18 | Oct 31 |
| 2001 | Apr 15 | Nov 7 | Apr 10 | Dec 11 |
| 2000 | May 11 | Oct 31 | Feb 24 | Nov 10 |
| 1999 | Apr 27 | Nov 11 | Apr 9 | Nov 22 |
| 1998 | Apr 16 | Nov 9 | Apr 15 | Nov 9 |
| 1997 | Apr 10 | Oct 26 | Apr 9 | Dec 2 |
| 1996 | Apr 18 | Oct 21 | Apr 17 | Nov 30 |
| 1995 | Jun 8 | Nov 3 | Mar 24 | Dec 17 |
| 1994 | Apr 26 | Oct 30 | Feb 16 | Nov 3 |
| 1993 | Mar 1 | Nov 16 | Feb 22 | Nov 17 |
| 1992 | Apr 7 | Nov 21 | Feb 16 | Nov 21 |
| 1991 | Mar 28 | Oct 28 | Feb 2 | Nov 17 |
| 1990 | Mar 13 | Nov 15 | Mar 12 | Nov 27 |
| 1989 | Mar 18 | Oct 30 | Feb 16 | Nov 28 |
| 1988 | May 1 | Nov 18 | Feb 6 | Nov 18 |
| 1987 | no data | Nov 15 | no data | Nov 28 |
| 1986 | no data | Nov 25 | no data | Nov 25 |
| 1982 | Apr 17 | no data | Mar 6 | no data |
| 1981 | Apr 11 | Nov 14 | Feb 25 | Nov 14 |
| 1980 | Apr 10 | Nov 12 | Mar 16 | Nov 12 |
| 1979 | Apr 19 | Oct 21 | Feb 23 | Nov 20 |
| 1978 | Apr 21 | Nov 1 | none | Nov 12 |
| 1977 | May 6 | Nov 4 | Mar 29 | Nov 19 |
| 1976 | Apr 11 | Nov 28 | Apr 2 | Nov 29 |
| 1975 | May 5 | Oct 28 | Apr 17 | Nov 9 |
| 1974 | May 19 | Nov 8 | Mar 10 | Nov 23 |
| 1973 | Apr 19 | Nov 2 | Jan 29 | Nov 3 |
| 1972 | Apr 25 | Oct 29 | Apr 13 | Oct 29 |
| 1971 | May 16 | Oct 1 | Apr 24 | Oct 29 |
| 1970 | Apr 29 | Oct 26 | Apr 28 | Dec 12 |
| 1969 | Apr 25 | Nov 17 | Mar 14 | Nov 17 |
| 1968 | Apr 22 | Nov 13 | Jan 29 | Dec 2 |
| 1967 | Apr 30 | Nov 23 | Feb 21 | Dec 1 |
| 1966 | Mar 23 | Nov 22 | Mar 20 | Nov 23 |
| 1965 | May 5 | Nov 22 | Feb 24 | Nov 28 |
| 1964 | May 4 | Nov 14 | Apr 24 | Nov 14 |
| 1963 | Apr 21 | Oct 31 | Mar 18 | Nov 18 |
| 1962 | Apr 29 | Nov 18 | Mar 13 | Dec 25 |
| 1961 | Apr 24 | Oct 21 | Mar 7 | Nov 11 |
| 1960 | May 22 | Nov 19 | Mar 10 | Nov 27 |
| 1959 | Mar 27 | Nov 4 | Mar 27 | Nov 17 |
| 1958 | Mar 17 | Nov 12 | Mar 13 | Nov 15 |
| 1957 | Mar 23 | Nov 4 | Mar 22 | Nov 30 |
| 1956 | Apr 1 | Oct 24 | Mar 6 | Nov 15 |
| 1955 | Apr 27 | Oct 31 | Apr 27 | Oct 31 |
| 1954 | Mar 14 | Nov 25 | Mar 13 | Nov 30 |
| 1953 | May 9 | Nov 7 | Apr 9 | Dec 21 |
| 1952 | Apr 14 | Nov 2 | Mar 2 | Nov 17 |
| 1951 | Apr 30 | Nov 17 | Mar 30 | Nov 23 |
"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.