Frost history / Haiwee, CA
Haiwee, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00043710, 1951 to 2016, measured from daily minimum temperatures.
Elevation 3,825 ft, 36.139, -117.953. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 6 | Nov 14 |
| Earliest | Feb 18 (1992) | Oct 11 (2000) |
| Latest | May 15 (1998) | Nov 30 (1954) |
| Trend | 1.5 days later per decade | 0.9 days earlier per decade |
| Years with data | 60 | 56 |
At 28°F (hard freeze) the median last spring date is Mar 7 and the median first fall date is Nov 22.
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 |
|---|---|---|---|---|
| 2016 | Apr 1 | no data | Feb 25 | no data |
| 2015 | May 9 | Nov 6 | Apr 9 | Nov 6 |
| 2014 | Feb 22 | Nov 3 | Feb 8 | Nov 18 |
| 2013 | Mar 10 | Nov 23 | Mar 1 | Dec 5 |
| 2012 | Apr 8 | Nov 11 | Apr 8 | Nov 11 |
| 2011 | Apr 11 | Nov 6 | Mar 2 | Nov 6 |
| 2010 | Apr 14 | Nov 10 | Feb 24 | Nov 24 |
| 2009 | Apr 6 | Nov 15 | Mar 12 | Dec 5 |
| 2008 | Apr 22 | no data | Mar 7 | no data |
| 2006 | Apr 7 | no data | Apr 7 | no data |
| 2005 | no data | Nov 17 | no data | Nov 27 |
| 2004 | Apr 20 | Oct 29 | Mar 1 | Nov 23 |
| 2003 | Apr 16 | no data | Mar 6 | no data |
| 2002 | May 2 | Nov 2 | Mar 20 | Dec 10 |
| 2001 | Apr 22 | Nov 20 | Apr 9 | Nov 26 |
| 2000 | Mar 11 | Oct 11 | Mar 8 | Oct 11 |
| 1999 | Apr 11 | Nov 22 | Apr 11 | Nov 23 |
| 1998 | May 15 | no data | Apr 2 | no data |
| 1996 | Mar 30 | Oct 22 | Feb 28 | Oct 23 |
| 1995 | Apr 20 | Oct 24 | Jan 21 | Dec 18 |
| 1994 | Mar 24 | no data | Feb 24 | no data |
| 1993 | Apr 14 | no data | Mar 2 | no data |
| 1992 | Feb 18 | Nov 11 | Feb 5 | Nov 11 |
| 1991 | Mar 27 | Oct 31 | Mar 27 | Nov 16 |
| 1990 | no data | Nov 22 | no data | Nov 27 |
| 1989 | Apr 26 | Oct 28 | Mar 4 | Nov 29 |
| 1988 | Mar 15 | Nov 15 | Mar 15 | Nov 15 |
| 1987 | Mar 20 | Nov 15 | Feb 28 | Nov 27 |
| 1986 | Mar 17 | Nov 8 | Feb 12 | Dec 1 |
| 1985 | Mar 31 | Nov 12 | Mar 26 | Nov 12 |
| 1984 | Apr 27 | no data | Feb 28 | no data |
| 1983 | May 1 | Nov 22 | Mar 22 | Nov 22 |
| 1982 | Apr 7 | Nov 3 | Apr 7 | Dec 14 |
| 1981 | Mar 14 | Nov 27 | Feb 8 | Nov 28 |
| 1980 | Mar 26 | Nov 14 | Feb 22 | Dec 6 |
| 1979 | Mar 20 | Nov 13 | Feb 25 | Nov 21 |
| 1978 | Feb 19 | Oct 31 | Feb 19 | Nov 12 |
| 1977 | Apr 1 | Nov 20 | Mar 31 | Nov 20 |
| 1976 | Apr 17 | Nov 27 | Mar 6 | Nov 27 |
| 1975 | Apr 17 | Oct 25 | Apr 8 | Nov 19 |
| 1974 | Apr 26 | Nov 24 | Mar 8 | Nov 30 |
| 1973 | Mar 30 | Nov 4 | Mar 24 | Nov 23 |
| 1972 | Mar 30 | Oct 30 | Mar 28 | Nov 21 |
| 1971 | Apr 18 | Oct 17 | Mar 14 | Oct 29 |
| 1970 | Apr 28 | Oct 28 | Jan 31 | Dec 3 |
| 1969 | Apr 7 | Nov 17 | Mar 14 | Nov 18 |
| 1968 | Mar 21 | Nov 14 | Feb 2 | Nov 29 |
| 1967 | Apr 30 | Nov 29 | Apr 1 | Dec 2 |
| 1966 | Apr 20 | Nov 23 | Mar 5 | Dec 23 |
| 1965 | no data | Oct 16 | no data | Dec 15 |
| 1964 | no data | Nov 14 | no data | Nov 14 |
| 1963 | Apr 20 | Nov 17 | Apr 20 | Nov 22 |
| 1962 | Mar 23 | Nov 17 | Mar 11 | Nov 17 |
| 1961 | Mar 26 | Nov 17 | Jan 10 | Nov 17 |
| 1960 | Mar 4 | Nov 28 | Feb 25 | Dec 16 |
| 1959 | Feb 25 | Nov 12 | Feb 15 | Dec 8 |
| 1958 | Apr 5 | Nov 15 | Mar 3 | Nov 17 |
| 1957 | Mar 15 | Nov 15 | Feb 7 | Nov 18 |
| 1956 | Apr 13 | Oct 29 | Mar 12 | Nov 20 |
| 1955 | Apr 19 | Nov 15 | Apr 19 | Nov 16 |
| 1954 | Mar 26 | Nov 30 | Mar 26 | Nov 30 |
| 1953 | Apr 12 | Oct 23 | Apr 9 | Nov 19 |
| 1952 | Mar 24 | Nov 10 | Mar 22 | Nov 25 |
| 1951 | Mar 12 | Nov 16 | Mar 5 | Nov 22 |
"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.