Frost history / Stockton Fire Stn 4, CA
Stockton Fire Stn 4, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00048560, 1951 to 2007, measured from daily minimum temperatures.
Elevation 12 ft, 37.999, -121.318. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Feb 27 | Nov 19 |
| Earliest | Jan 20 (1983) | Sep 20 (1989) |
| Latest | Apr 28 (1991) | Dec 26 (1995) |
| Trend | 1.1 days earlier per decade | 0.6 days earlier per decade |
| Years with data | 46, 1 with no freeze | 52 |
At 28°F (hard freeze) the median last spring date is Jan 25 and the median first fall date is Nov 28.
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 |
|---|---|---|---|---|
| 2007 | Mar 3 | no data | Jan 18 | no data |
| 2006 | Feb 22 | Nov 10 | Feb 21 | Dec 18 |
| 2005 | Mar 31 | Dec 4 | none | Dec 6 |
| 2004 | Jan 27 | Nov 6 | none | Nov 29 |
| 2003 | no data | Nov 23 | no data | none |
| 2001 | no data | Nov 27 | no data | none |
| 2000 | Jan 28 | Nov 12 | none | none |
| 1999 | no data | Nov 19 | no data | none |
| 1998 | no data | Dec 4 | no data | Dec 21 |
| 1997 | Mar 5 | Dec 10 | Jan 15 | Dec 26 |
| 1996 | Feb 26 | Dec 3 | none | Dec 3 |
| 1995 | none | Dec 26 | none | none |
| 1993 | no data | Nov 15 | no data | Nov 15 |
| 1992 | Jan 23 | Nov 10 | none | none |
| 1991 | Apr 28 | Nov 16 | Mar 27 | Nov 24 |
| 1990 | Apr 18 | Nov 12 | Apr 18 | Nov 27 |
| 1989 | no data | Sep 20 | no data | Oct 5 |
| 1988 | Apr 1 | Oct 27 | Feb 10 | Dec 30 |
| 1987 | no data | Nov 25 | no data | Nov 25 |
| 1986 | Feb 9 | no data | Feb 9 | no data |
| 1985 | no data | Nov 11 | no data | Nov 11 |
| 1984 | Jan 25 | Oct 18 | Jan 19 | Nov 23 |
| 1983 | Jan 20 | Nov 8 | Jan 2 | Nov 8 |
| 1982 | Feb 11 | Dec 9 | Jan 23 | Dec 30 |
| 1981 | Feb 4 | Dec 24 | none | none |
| 1980 | Jan 30 | Nov 15 | none | Nov 26 |
| 1979 | Feb 10 | Nov 20 | Feb 4 | Nov 20 |
| 1978 | Jan 27 | Nov 12 | none | Nov 14 |
| 1977 | Feb 4 | Nov 19 | none | none |
| 1976 | Mar 5 | Nov 28 | Jan 25 | Nov 28 |
| 1975 | Mar 29 | Nov 19 | Feb 22 | Dec 18 |
| 1974 | Feb 24 | Nov 28 | Jan 10 | Nov 28 |
| 1973 | Mar 18 | Nov 26 | Jan 23 | none |
| 1972 | Feb 4 | Dec 5 | Feb 3 | Dec 5 |
| 1971 | Mar 21 | Nov 3 | Mar 2 | Dec 10 |
| 1970 | Apr 28 | Oct 28 | Jan 7 | none |
| 1969 | Apr 8 | Nov 18 | Mar 8 | Nov 19 |
| 1968 | Mar 19 | no data | Jan 11 | no data |
| 1967 | Apr 12 | Dec 6 | Jan 10 | Dec 11 |
| 1966 | Mar 4 | Nov 24 | Mar 3 | Dec 27 |
| 1965 | Feb 19 | Nov 28 | Jan 2 | Dec 15 |
| 1964 | Feb 27 | Nov 16 | Jan 13 | Nov 16 |
| 1963 | Jan 26 | Dec 10 | Jan 23 | none |
| 1962 | Feb 28 | Dec 25 | Feb 27 | Dec 25 |
| 1961 | Jan 23 | Nov 17 | Jan 22 | Nov 17 |
| 1960 | Feb 24 | Dec 6 | Jan 13 | Dec 6 |
| 1959 | Feb 13 | Nov 17 | none | Dec 7 |
| 1958 | Mar 7 | Nov 17 | Jan 16 | Nov 17 |
| 1957 | Feb 5 | Nov 6 | Feb 4 | Nov 24 |
| 1956 | Mar 8 | Oct 24 | Feb 2 | Nov 20 |
| 1955 | Mar 21 | Nov 16 | Feb 28 | none |
| 1954 | no data | Nov 30 | no data | Dec 27 |
| 1953 | Mar 3 | Nov 20 | Mar 3 | Dec 28 |
| 1952 | Mar 5 | Nov 17 | Jan 9 | Nov 20 |
| 1951 | Mar 11 | Dec 7 | Mar 3 | Dec 9 |
"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.