Frost history / Lake Spaulding, CA
Lake Spaulding, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00044713, 1951 to 1999, measured from daily minimum temperatures.
Elevation 5,156 ft, 39.318, -120.639. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 8 | Oct 3 |
| Earliest | May 5 (1997) | Aug 15 (1954) |
| Latest | Jul 22 (1987) | Nov 8 (1988) |
| Trend | little change (less than half a day per decade) | 3.4 days later per decade |
| Years with data | 45 | 41 |
At 28°F (hard freeze) the median last spring date is May 16 and the median first fall date is Oct 23.
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 |
|---|---|---|---|---|
| 1999 | Jun 9 | no data | May 15 | no data |
| 1998 | May 30 | no data | May 26 | no data |
| 1997 | May 5 | Oct 7 | May 1 | Oct 8 |
| 1995 | Jun 19 | no data | Jun 6 | no data |
| 1994 | Jun 16 | Sep 10 | May 16 | Oct 15 |
| 1993 | Jun 11 | Oct 8 | May 13 | Nov 7 |
| 1992 | Jun 13 | Oct 3 | Apr 23 | Nov 8 |
| 1991 | Jun 20 | Oct 25 | May 19 | Oct 25 |
| 1990 | Jun 1 | Oct 13 | Apr 29 | Nov 1 |
| 1989 | May 30 | Oct 3 | May 25 | Oct 26 |
| 1988 | Jun 8 | Nov 8 | May 30 | Nov 11 |
| 1987 | Jul 22 | Oct 15 | May 2 | Nov 11 |
| 1986 | May 22 | Sep 9 | May 22 | Sep 20 |
| 1985 | Jun 1 | Sep 9 | May 12 | Sep 15 |
| 1984 | Jun 8 | Sep 24 | May 16 | Oct 15 |
| 1983 | Jun 19 | Sep 9 | May 14 | Nov 8 |
| 1982 | Jun 7 | Sep 20 | Jun 7 | Sep 28 |
| 1981 | Jun 13 | no data | Jun 13 | no data |
| 1980 | Jun 6 | no data | Jun 6 | no data |
| 1979 | Jul 4 | Oct 20 | May 9 | Oct 21 |
| 1978 | no data | Oct 26 | no data | Nov 1 |
| 1977 | May 28 | Sep 22 | May 18 | Nov 6 |
| 1975 | Jun 26 | no data | May 7 | no data |
| 1974 | May 21 | Oct 23 | May 20 | Nov 4 |
| 1973 | Jun 18 | Aug 23 | Jun 18 | Sep 21 |
| 1972 | Jun 11 | Sep 11 | Jun 11 | Sep 11 |
| 1971 | Jun 4 | Sep 27 | Jun 2 | Sep 30 |
| 1970 | Jun 29 | Sep 15 | May 11 | Oct 25 |
| 1969 | Jun 28 | Oct 6 | May 4 | Oct 13 |
| 1968 | May 24 | Sep 20 | May 24 | Sep 20 |
| 1967 | Jun 2 | Oct 3 | May 13 | Oct 26 |
| 1966 | no data | Sep 12 | no data | Sep 14 |
| 1965 | May 23 | Sep 17 | May 8 | Nov 6 |
| 1964 | Jun 8 | Oct 24 | May 8 | Oct 26 |
| 1963 | Jun 30 | Oct 12 | May 12 | Oct 27 |
| 1962 | Jun 5 | Oct 5 | May 20 | Oct 7 |
| 1961 | May 27 | Sep 18 | May 13 | Oct 9 |
| 1960 | May 26 | Oct 9 | May 23 | Oct 12 |
| 1959 | Jun 7 | Aug 21 | May 19 | Oct 7 |
| 1958 | May 13 | Oct 22 | May 13 | Nov 12 |
| 1957 | May 22 | Aug 30 | Apr 24 | Nov 2 |
| 1956 | Jun 6 | Oct 12 | Apr 16 | Oct 23 |
| 1955 | Jul 6 | Oct 4 | Jun 1 | Oct 5 |
| 1954 | Jun 11 | Aug 15 | May 1 | Oct 23 |
| 1953 | Jun 13 | Sep 23 | May 27 | Oct 23 |
| 1952 | Jun 15 | Sep 10 | Jun 13 | Sep 10 |
| 1951 | Jun 7 | Oct 3 | May 13 | Oct 17 |
"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.