Frost history / Los Banos Det Resv, CA
Los Banos Det Resv, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00045120, 1968 to 2007, measured from daily minimum temperatures.
Elevation 407 ft, 36.990, -120.930. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Feb 2 | Dec 11 |
| Earliest | Jan 2 (1988) | Nov 19 (1994) |
| Latest | Apr 7 (1975) | Dec 29 (2003) |
| Trend | 0.9 days earlier per decade | 2.2 days earlier per decade |
| Years with data | 39, 7 with no freeze | 39, 10 with no freeze |
At 28°F (hard freeze) the median last spring date is Jan 13 and the median first fall date is Dec 21.
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 | Feb 4 | no data | Jan 24 | no data |
| 2006 | none | Nov 30 | none | Dec 19 |
| 2005 | none | Dec 15 | none | none |
| 2004 | none | Nov 29 | none | none |
| 2003 | none | Dec 29 | none | none |
| 2002 | Jan 31 | none | none | none |
| 2001 | Feb 12 | none | none | none |
| 2000 | none | Dec 3 | none | none |
| 1999 | Jan 14 | none | Jan 13 | none |
| 1998 | Jan 22 | Dec 21 | none | Dec 21 |
| 1997 | Jan 15 | Dec 12 | Jan 14 | none |
| 1996 | Feb 28 | none | none | none |
| 1995 | none | none | none | none |
| 1994 | Feb 1 | Nov 19 | none | none |
| 1993 | Jan 5 | Nov 25 | Jan 5 | Dec 25 |
| 1992 | Feb 3 | Dec 15 | none | Dec 15 |
| 1991 | Mar 15 | Nov 30 | Jan 2 | Nov 30 |
| 1990 | Feb 15 | Dec 15 | none | Dec 21 |
| 1989 | Feb 9 | Dec 11 | Feb 7 | Dec 27 |
| 1988 | Jan 2 | Dec 9 | none | Dec 30 |
| 1987 | Jan 14 | Dec 15 | none | Dec 26 |
| 1986 | Feb 9 | Dec 10 | none | none |
| 1985 | Feb 7 | Dec 11 | Jan 3 | Dec 13 |
| 1984 | Jan 27 | Dec 17 | Jan 14 | none |
| 1983 | Jan 14 | none | Jan 1 | none |
| 1982 | Feb 5 | Dec 23 | Jan 13 | none |
| 1981 | Jan 25 | none | Jan 25 | none |
| 1980 | Jan 23 | Dec 8 | none | none |
| 1979 | Feb 4 | Nov 21 | Jan 2 | Dec 18 |
| 1978 | none | Dec 7 | none | Dec 8 |
| 1977 | Jan 19 | none | none | none |
| 1976 | Feb 6 | Dec 28 | Jan 2 | none |
| 1975 | Apr 7 | Dec 9 | Jan 28 | Dec 26 |
| 1974 | Jan 27 | Dec 18 | none | none |
| 1973 | Jan 7 | none | none | none |
| 1972 | Feb 3 | Dec 9 | Feb 3 | Dec 9 |
| 1971 | Mar 2 | Dec 10 | none | Dec 21 |
| 1970 | Jan 6 | Dec 25 | Jan 4 | Dec 28 |
| 1969 | Feb 5 | none | none | none |
| 1968 | no data | Dec 21 | no data | Dec 21 |
"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 1991–2020 frost probabilities.