Frost history / Blythe, CA
Blythe, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00040924, 1951 to 2007, measured from daily minimum temperatures.
Elevation 268 ft, 33.613, -114.597. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Feb 12 | Dec 6 |
| Earliest | Jan 4 (1993) | Oct 30 (1971) |
| Latest | Mar 27 (1991) | Dec 27 (1982) |
| Trend | 2.2 days earlier per decade | 2.2 days later per decade |
| Years with data | 46, 4 with no freeze | 46, 2 with no freeze |
At 28°F (hard freeze) the median last spring date is Jan 31 and the median first fall date is Dec 17.
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 | Jan 18 | no data | Jan 17 | no data |
| 2006 | Jan 24 | no data | none | no data |
| 2003 | Feb 9 | no data | none | no data |
| 2002 | Mar 4 | Dec 19 | none | none |
| 2001 | Feb 9 | no data | none | no data |
| 1999 | Mar 4 | no data | none | no data |
| 1998 | none | Dec 7 | none | Dec 23 |
| 1997 | none | no data | none | no data |
| 1996 | Jan 24 | Dec 19 | none | none |
| 1995 | none | none | none | none |
| 1994 | Feb 27 | Nov 20 | none | none |
| 1993 | Jan 4 | Dec 7 | none | Dec 23 |
| 1992 | Jan 18 | Nov 28 | none | none |
| 1991 | Mar 27 | Dec 2 | none | Dec 2 |
| 1990 | Feb 18 | Dec 11 | Feb 18 | Dec 23 |
| 1989 | Feb 7 | Nov 30 | Feb 7 | none |
| 1988 | Jan 21 | Dec 22 | none | Dec 27 |
| 1987 | Feb 27 | Dec 15 | Jan 21 | Dec 15 |
| 1986 | Feb 11 | Dec 11 | Feb 10 | none |
| 1985 | Feb 7 | Dec 13 | Feb 7 | Dec 13 |
| 1984 | Jan 22 | Dec 15 | none | none |
| 1983 | no data | Nov 23 | no data | none |
| 1982 | no data | Dec 27 | no data | none |
| 1980 | no data | Dec 9 | no data | none |
| 1979 | Feb 6 | Dec 16 | Jan 29 | none |
| 1978 | no data | Dec 7 | no data | Dec 7 |
| 1977 | Jan 31 | none | Jan 10 | none |
| 1976 | Jan 13 | no data | Jan 3 | no data |
| 1975 | Feb 19 | Nov 30 | Jan 29 | none |
| 1974 | no data | Dec 1 | no data | Dec 2 |
| 1973 | no data | Nov 27 | no data | Dec 21 |
| 1972 | Feb 14 | Dec 1 | Jan 31 | Dec 12 |
| 1971 | Mar 3 | Oct 30 | Mar 3 | Dec 9 |
| 1970 | Jan 30 | Dec 13 | Jan 6 | none |
| 1969 | Feb 1 | Dec 14 | Feb 1 | Dec 30 |
| 1968 | no data | Dec 6 | no data | Dec 19 |
| 1967 | Feb 17 | Dec 21 | Jan 4 | none |
| 1966 | Mar 4 | Dec 25 | Feb 14 | none |
| 1965 | Mar 6 | Dec 19 | Feb 13 | none |
| 1964 | Mar 9 | Nov 16 | Feb 27 | Dec 15 |
| 1963 | Jan 28 | Dec 6 | Jan 22 | Dec 12 |
| 1962 | Mar 15 | Dec 14 | Mar 15 | Dec 28 |
| 1961 | Feb 25 | Nov 19 | Jan 8 | Dec 8 |
| 1960 | Feb 25 | Nov 28 | Feb 25 | Dec 7 |
| 1959 | Feb 13 | Dec 6 | none | none |
| 1958 | none | Nov 17 | none | none |
| 1957 | Jan 29 | Dec 1 | none | none |
| 1956 | Mar 13 | Nov 4 | Feb 10 | none |
| 1955 | Feb 23 | Nov 23 | Feb 22 | none |
| 1954 | Jan 11 | Dec 23 | Jan 3 | Dec 28 |
| 1953 | Feb 23 | Dec 6 | none | Dec 24 |
| 1952 | Jan 11 | Nov 25 | Jan 11 | none |
| 1951 | Mar 4 | Dec 9 | Jan 2 | 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 to 2020 frost probabilities.