Frost history / Cecilville, CA
Cecilville, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00041606, 1955 to 2002, measured from daily minimum temperatures.
Elevation 2,310 ft, 41.142, -123.139. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 24 | Oct 4 |
| Earliest | Apr 11 (1997) | Sep 13 (1970) |
| Latest | Jul 4 (1963) | Nov 11 (1987) |
| Trend | 8.0 days earlier per decade | 5.5 days later per decade |
| Years with data | 37 | 33 |
At 28°F (hard freeze) the median last spring date is Apr 29 and the median first fall date is Oct 25.
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 |
|---|---|---|---|---|
| 2002 | no data | Oct 1 | no data | Oct 2 |
| 2001 | May 3 | no data | Apr 17 | no data |
| 2000 | May 12 | no data | Mar 21 | no data |
| 1999 | Jun 7 | no data | May 9 | no data |
| 1998 | May 18 | Oct 16 | Apr 17 | Oct 30 |
| 1997 | Apr 11 | Oct 13 | Apr 11 | Oct 25 |
| 1996 | May 10 | Oct 14 | Mar 29 | Oct 17 |
| 1995 | Jun 6 | Oct 4 | Mar 27 | Oct 22 |
| 1994 | no data | Oct 10 | no data | Oct 29 |
| 1993 | Apr 12 | Oct 28 | Apr 12 | Nov 2 |
| 1992 | Apr 23 | Nov 9 | Apr 6 | Nov 9 |
| 1991 | May 10 | Oct 28 | May 10 | Oct 30 |
| 1990 | May 8 | Oct 7 | Mar 14 | Nov 2 |
| 1989 | May 19 | Oct 4 | Mar 3 | Oct 29 |
| 1988 | May 4 | Oct 31 | Apr 8 | Nov 30 |
| 1987 | Apr 20 | Nov 11 | Mar 28 | Nov 15 |
| 1986 | May 22 | Oct 2 | May 22 | Nov 6 |
| 1985 | no data | Oct 8 | no data | Oct 9 |
| 1984 | Jun 10 | no data | Apr 28 | no data |
| 1983 | May 16 | Oct 15 | May 11 | Nov 8 |
| 1982 | no data | Sep 14 | no data | Oct 8 |
| 1981 | Jun 14 | no data | May 6 | no data |
| 1980 | May 24 | no data | Apr 24 | no data |
| 1979 | Jun 14 | no data | Apr 20 | no data |
| 1977 | May 28 | no data | May 28 | no data |
| 1973 | May 26 | no data | Apr 21 | no data |
| 1972 | May 11 | Sep 20 | Apr 30 | Oct 26 |
| 1971 | May 21 | Sep 26 | May 21 | Oct 1 |
| 1970 | Jun 29 | Sep 13 | Jun 15 | Oct 7 |
| 1969 | May 4 | Oct 3 | May 4 | Oct 3 |
| 1968 | Jun 13 | Sep 21 | May 6 | Sep 21 |
| 1967 | Jun 3 | no data | May 13 | no data |
| 1966 | Jun 4 | Sep 14 | Apr 29 | Oct 13 |
| 1965 | no data | Sep 17 | no data | Nov 22 |
| 1964 | Jun 27 | no data | May 7 | no data |
| 1963 | Jul 4 | Oct 23 | May 9 | Oct 27 |
| 1962 | Jun 5 | Oct 5 | Jun 4 | Oct 5 |
| 1961 | May 24 | Sep 29 | May 4 | Oct 21 |
| 1960 | May 24 | Oct 9 | Apr 24 | Oct 13 |
| 1959 | May 28 | Sep 28 | May 3 | Oct 28 |
| 1958 | May 13 | Sep 24 | Apr 24 | Sep 24 |
| 1957 | no data | Oct 5 | no data | Nov 2 |
| 1956 | no data | Sep 21 | no data | Oct 22 |
| 1955 | Jun 29 | Sep 15 | May 14 | Oct 11 |
"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.