Frost history / Kent, WA
Kent, WA: frost dates by year
Last spring and first fall frost at NOAA station USC00454169, 1951 to 2018, measured from daily minimum temperatures.
Elevation 30 ft, 47.417, -122.243. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 19 | Oct 28 |
| Earliest | Feb 27 (2003) | Sep 13 (1970) |
| Latest | May 25 (1964) | Dec 6 (2016) |
| Trend | 6.9 days earlier per decade | 4.8 days later per decade |
| Years with data | 53 | 55 |
At 28°F (hard freeze) the median last spring date is Mar 19 and the median first fall date is Nov 11.
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 |
|---|---|---|---|---|
| 2018 | no data | Nov 8 | no data | Dec 6 |
| 2016 | Mar 17 | Dec 6 | Jan 9 | Dec 7 |
| 2014 | no data | Nov 12 | no data | Nov 14 |
| 2013 | May 1 | no data | Mar 4 | no data |
| 2012 | Apr 8 | Nov 10 | Mar 19 | Nov 10 |
| 2011 | Apr 9 | Nov 2 | Feb 26 | Nov 6 |
| 2010 | Mar 20 | Nov 22 | Mar 9 | Nov 22 |
| 2009 | no data | Nov 14 | no data | Nov 14 |
| 2008 | Apr 3 | Nov 24 | Jan 27 | Dec 14 |
| 2007 | Apr 3 | Oct 26 | Feb 3 | Nov 22 |
| 2006 | Mar 21 | Oct 30 | Feb 24 | Oct 30 |
| 2005 | Feb 27 | Nov 15 | Feb 23 | Nov 28 |
| 2004 | Mar 2 | Nov 4 | Jan 7 | Nov 29 |
| 2003 | Feb 27 | Oct 31 | Feb 25 | Oct 31 |
| 2002 | Mar 23 | Oct 30 | Mar 23 | Oct 31 |
| 2001 | Apr 4 | Oct 28 | Mar 10 | Dec 24 |
| 2000 | Mar 20 | Nov 11 | Feb 20 | Nov 11 |
| 1999 | Apr 2 | Nov 2 | Mar 6 | none |
| 1998 | Mar 7 | Nov 8 | Mar 5 | Dec 18 |
| 1997 | Apr 4 | Nov 12 | Feb 9 | Dec 8 |
| 1996 | Mar 28 | Oct 31 | Mar 2 | Nov 19 |
| 1995 | no data | Oct 31 | no data | Nov 2 |
| 1994 | Mar 23 | Nov 3 | Feb 8 | Nov 18 |
| 1993 | no data | Nov 8 | no data | Nov 14 |
| 1992 | no data | Nov 10 | no data | Nov 23 |
| 1991 | Apr 12 | Oct 30 | Jan 30 | Oct 30 |
| 1987 | Apr 20 | Oct 19 | Mar 29 | Nov 17 |
| 1986 | May 13 | Nov 10 | Apr 11 | Nov 10 |
| 1985 | May 12 | no data | Apr 21 | no data |
| 1984 | Apr 26 | Sep 29 | Feb 17 | Oct 19 |
| 1983 | no data | Sep 28 | no data | Nov 29 |
| 1982 | May 5 | Oct 18 | May 3 | Oct 18 |
| 1981 | Apr 13 | no data | Apr 13 | no data |
| 1977 | May 12 | no data | Feb 25 | no data |
| 1976 | Apr 17 | Oct 17 | Apr 2 | Oct 19 |
| 1975 | Apr 30 | Oct 24 | Apr 8 | Nov 18 |
| 1974 | Apr 13 | no data | Apr 13 | no data |
| 1973 | Apr 30 | Oct 4 | Mar 23 | Nov 2 |
| 1972 | Apr 22 | Sep 25 | Mar 7 | Sep 27 |
| 1971 | Apr 19 | Oct 16 | Mar 25 | Oct 28 |
| 1970 | Apr 28 | Sep 13 | Mar 19 | Oct 27 |
| 1969 | Apr 26 | Oct 13 | Mar 24 | Oct 14 |
| 1968 | Apr 22 | Oct 8 | Mar 9 | Nov 4 |
| 1967 | Apr 24 | Nov 2 | Apr 15 | Nov 21 |
| 1966 | Apr 19 | Oct 16 | Mar 22 | Nov 8 |
| 1965 | May 7 | Nov 23 | Mar 24 | Nov 23 |
| 1964 | May 25 | Oct 27 | Apr 18 | Nov 16 |
| 1963 | May 4 | Oct 19 | Apr 6 | Oct 19 |
| 1962 | May 7 | Oct 10 | Mar 28 | Nov 24 |
| 1961 | May 6 | Sep 22 | Apr 20 | Nov 4 |
| 1960 | May 22 | Oct 9 | Mar 12 | Oct 29 |
| 1959 | May 5 | Oct 10 | Mar 20 | Nov 4 |
| 1958 | Apr 9 | Oct 23 | Mar 14 | Nov 15 |
| 1957 | Apr 8 | Oct 20 | Feb 21 | Oct 21 |
| 1956 | Apr 17 | Oct 24 | Mar 16 | Nov 19 |
| 1955 | Apr 28 | Nov 5 | Mar 20 | Nov 11 |
| 1954 | May 1 | Oct 24 | May 1 | Dec 1 |
| 1953 | Apr 10 | Oct 22 | Apr 2 | Nov 2 |
| 1952 | May 5 | Oct 14 | Apr 8 | Nov 9 |
| 1951 | Apr 24 | Oct 26 | Apr 21 | 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.