Frost history / Adin Rs, CA
Adin Rs, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00040029, 1955 to 2008, measured from daily minimum temperatures.
Elevation 4,195 ft, 41.194, -120.945. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 8 | Sep 11 |
| Earliest | May 1 (1973) | Aug 5 (1969) |
| Latest | Jul 3 (1966) | Oct 16 (1963) |
| Trend | 3.8 days earlier per decade | 2.3 days later per decade |
| Years with data | 32 | 32 |
At 28°F (hard freeze) the median last spring date is May 10 and the median first fall date is Oct 1.
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 |
|---|---|---|---|---|
| 2008 | Jun 11 | no data | May 1 | no data |
| 2007 | Jun 7 | Sep 15 | May 13 | Sep 30 |
| 2006 | May 9 | Sep 16 | Apr 18 | Sep 16 |
| 2005 | Jun 8 | Sep 24 | Apr 18 | Sep 24 |
| 2004 | Jun 8 | Sep 21 | Apr 15 | Oct 10 |
| 2003 | May 19 | Sep 17 | Apr 26 | Oct 10 |
| 2002 | Jun 9 | Sep 8 | May 23 | Oct 2 |
| 2001 | Jun 13 | Sep 6 | Jun 4 | Oct 9 |
| 2000 | May 31 | Sep 23 | May 31 | Sep 23 |
| 1999 | Jun 9 | Aug 31 | May 17 | Oct 15 |
| 1998 | May 26 | Oct 4 | May 18 | Oct 16 |
| 1997 | May 25 | Oct 11 | May 1 | Oct 24 |
| 1996 | May 23 | Sep 17 | May 4 | Oct 16 |
| 1995 | Jun 5 | Sep 29 | Apr 21 | Oct 4 |
| 1977 | Jun 2 | no data | May 28 | no data |
| 1976 | no data | Sep 7 | no data | Oct 17 |
| 1975 | Jun 24 | no data | May 22 | no data |
| 1974 | May 30 | Aug 20 | May 20 | Oct 4 |
| 1973 | May 1 | Sep 1 | May 1 | Oct 2 |
| 1972 | Jun 12 | Sep 11 | May 9 | Sep 11 |
| 1971 | Jun 1 | Sep 3 | May 19 | Oct 1 |
| 1970 | Jun 30 | Sep 5 | May 13 | Sep 5 |
| 1969 | Jun 29 | Aug 5 | Apr 30 | Sep 21 |
| 1968 | May 24 | Aug 17 | May 6 | Sep 21 |
| 1967 | Jun 23 | Sep 12 | May 31 | Oct 3 |
| 1966 | Jul 3 | Aug 31 | Jul 2 | Sep 12 |
| 1965 | Jun 27 | Sep 7 | May 10 | Sep 17 |
| 1964 | May 21 | Aug 19 | May 7 | Sep 18 |
| 1963 | Jun 29 | Oct 16 | Apr 23 | Oct 16 |
| 1962 | Jun 6 | Oct 5 | Jun 6 | Oct 5 |
| 1961 | no data | Sep 9 | no data | Sep 23 |
| 1960 | Jun 21 | Aug 23 | Jun 21 | Sep 22 |
| 1957 | Jun 16 | Sep 19 | Apr 25 | Sep 24 |
| 1956 | Jul 2 | Sep 21 | Apr 29 | Oct 13 |
| 1955 | no data | Sep 21 | no data | Sep 25 |
"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.