Frost history / Bickleton, WA
Bickleton, WA: frost dates by year
Last spring and first fall frost at NOAA station USC00450668, 1955 to 2016, measured from daily minimum temperatures.
Elevation 3,015 ft, 45.998, -120.301. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 25 | Oct 9 |
| Earliest | Apr 27 (1958) | Aug 28 (1964) |
| Latest | Jul 22 (1973) | Nov 14 (1987) |
| Trend | little change (less than half a day per decade) | 3.1 days later per decade |
| Years with data | 42 | 45 |
At 28°F (hard freeze) the median last spring date is May 4 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 |
|---|---|---|---|---|
| 2016 | Jun 17 | Oct 12 | Mar 26 | Oct 12 |
| 2015 | no data | Nov 4 | no data | Nov 4 |
| 2014 | Apr 29 | Nov 8 | Mar 31 | Nov 11 |
| 2013 | May 23 | Oct 2 | Apr 17 | Oct 30 |
| 2012 | Jun 6 | Oct 3 | May 10 | Oct 22 |
| 2011 | May 26 | Oct 25 | Apr 18 | Oct 26 |
| 2010 | Jun 16 | Oct 26 | May 5 | Nov 9 |
| 2009 | May 14 | Oct 1 | May 13 | Oct 11 |
| 2004 | May 11 | no data | Apr 19 | no data |
| 2003 | no data | Oct 8 | no data | Oct 29 |
| 2001 | Jun 13 | Oct 17 | Apr 15 | Oct 28 |
| 1996 | no data | Sep 21 | no data | Oct 16 |
| 1993 | May 9 | Sep 20 | Apr 19 | Nov 3 |
| 1992 | no data | Sep 14 | no data | Oct 14 |
| 1991 | Jun 19 | Oct 17 | May 9 | Oct 23 |
| 1989 | May 28 | Oct 24 | Apr 3 | Oct 29 |
| 1988 | May 30 | Oct 27 | May 3 | Oct 27 |
| 1987 | May 19 | Nov 14 | Apr 18 | Nov 17 |
| 1986 | May 22 | Nov 2 | May 11 | Nov 8 |
| 1985 | May 12 | Oct 7 | May 12 | Oct 8 |
| 1984 | Jun 1 | Oct 12 | May 16 | Oct 16 |
| 1983 | May 15 | Oct 15 | Apr 25 | Oct 24 |
| 1982 | Jun 2 | no data | May 8 | no data |
| 1981 | May 15 | Sep 23 | May 4 | Nov 25 |
| 1980 | Jun 2 | Oct 21 | Apr 10 | Oct 22 |
| 1979 | May 29 | Oct 17 | Apr 19 | Nov 1 |
| 1978 | May 25 | Oct 21 | May 16 | Oct 25 |
| 1977 | May 29 | Oct 27 | May 5 | Nov 3 |
| 1976 | no data | Oct 17 | no data | Nov 7 |
| 1975 | May 25 | Oct 7 | May 24 | Oct 23 |
| 1974 | no data | Oct 5 | no data | Oct 6 |
| 1973 | Jul 22 | no data | May 25 | no data |
| 1972 | May 24 | Sep 24 | Apr 30 | Sep 27 |
| 1971 | no data | Sep 29 | no data | Oct 17 |
| 1970 | May 13 | Sep 13 | May 13 | Oct 5 |
| 1969 | May 2 | Oct 10 | May 2 | Oct 13 |
| 1968 | no data | Sep 19 | no data | Oct 31 |
| 1967 | May 2 | Oct 19 | Apr 28 | Oct 26 |
| 1966 | Jun 2 | Oct 9 | Jun 2 | Nov 8 |
| 1965 | May 18 | no data | May 6 | no data |
| 1964 | Jun 28 | Aug 28 | May 14 | Oct 17 |
| 1963 | Jun 30 | Oct 19 | May 3 | Oct 19 |
| 1962 | Jun 4 | Oct 5 | Jun 4 | Nov 14 |
| 1961 | May 6 | Sep 29 | May 6 | Oct 20 |
| 1960 | May 25 | Oct 13 | May 22 | Nov 4 |
| 1959 | May 26 | no data | May 5 | no data |
| 1958 | Apr 27 | Sep 24 | Apr 5 | Oct 23 |
| 1957 | May 21 | Oct 3 | Apr 25 | Oct 4 |
| 1956 | May 11 | Sep 22 | Apr 8 | Oct 22 |
| 1955 | Jun 16 | Oct 5 | May 31 | Oct 31 |
"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.