Frost history / Auburn, CA
Auburn, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00040383, 1951 to 2003, measured from daily minimum temperatures.
Elevation 1,292 ft, 38.907, -121.084. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Mar 5 | Dec 1 |
| Earliest | Jan 6 (2000) | Oct 29 (1971) |
| Latest | May 9 (1953) | Dec 29 (1955) |
| Trend | 5.6 days earlier per decade | little change (less than half a day per decade) |
| Years with data | 44, 1 with no freeze | 46, 3 with no freeze |
At 28°F (hard freeze) the median last spring date is Jan 28 and the median first fall date is Dec 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 | no data | Nov 22 | no data | none |
| 2002 | Mar 16 | none | Jan 30 | none |
| 2001 | Feb 13 | Nov 27 | none | none |
| 2000 | Jan 6 | Dec 26 | Jan 3 | none |
| 1999 | Apr 11 | Dec 8 | Jan 8 | none |
| 1998 | none | Dec 5 | none | Dec 21 |
| 1997 | Jan 15 | Dec 21 | Jan 15 | none |
| 1996 | Feb 27 | none | none | none |
| 1994 | Feb 12 | no data | none | no data |
| 1990 | no data | Nov 27 | no data | Dec 20 |
| 1988 | Jan 18 | no data | none | no data |
| 1987 | Mar 24 | Dec 12 | Jan 15 | Dec 25 |
| 1986 | Feb 8 | Dec 11 | none | none |
| 1985 | Mar 6 | Nov 11 | Jan 13 | Dec 12 |
| 1984 | Feb 23 | Nov 26 | none | Dec 25 |
| 1983 | Jan 21 | Nov 22 | none | none |
| 1982 | no data | Nov 16 | no data | none |
| 1981 | Feb 2 | none | none | none |
| 1980 | Jan 30 | Dec 6 | none | none |
| 1979 | Feb 5 | Nov 20 | Jan 30 | none |
| 1978 | Jan 25 | Nov 13 | none | Dec 6 |
| 1977 | Mar 31 | Nov 19 | Jan 18 | Nov 19 |
| 1976 | Apr 1 | Nov 29 | Jan 3 | none |
| 1975 | Mar 29 | Nov 19 | Jan 31 | Nov 29 |
| 1974 | Feb 7 | Dec 10 | Jan 3 | Dec 24 |
| 1973 | Jan 28 | Nov 19 | Jan 8 | none |
| 1972 | Mar 27 | Dec 1 | Feb 3 | Dec 5 |
| 1971 | Apr 21 | Oct 29 | Mar 5 | none |
| 1970 | no data | Dec 14 | no data | none |
| 1969 | Mar 13 | Dec 28 | Feb 1 | none |
| 1968 | Jan 12 | Dec 17 | Jan 9 | Dec 20 |
| 1967 | Apr 11 | Dec 2 | none | Dec 14 |
| 1966 | Mar 5 | Dec 20 | Mar 3 | Dec 27 |
| 1965 | Feb 11 | Dec 4 | Jan 8 | Dec 17 |
| 1964 | Mar 9 | Nov 16 | Mar 8 | none |
| 1963 | Apr 2 | Dec 1 | Jan 28 | Dec 7 |
| 1962 | Mar 12 | Nov 29 | Feb 28 | Dec 25 |
| 1961 | Jan 19 | Dec 7 | Jan 19 | Dec 10 |
| 1960 | Jan 18 | Dec 5 | Jan 16 | none |
| 1959 | Feb 14 | Dec 13 | none | Dec 31 |
| 1958 | Mar 7 | Nov 15 | none | none |
| 1957 | Feb 5 | Dec 9 | Feb 1 | none |
| 1956 | Mar 7 | Dec 7 | Mar 7 | Dec 21 |
| 1955 | Apr 3 | Dec 29 | Jan 17 | none |
| 1954 | Mar 13 | Nov 30 | none | Dec 20 |
| 1953 | May 9 | Nov 18 | Mar 3 | none |
| 1952 | Mar 22 | Nov 24 | Mar 22 | none |
| 1951 | Mar 11 | Dec 7 | Mar 5 | Dec 7 |
"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.