Frost history / Aberdeen 20NNE, WA
Aberdeen 20NNE, WA: frost dates by year
Last spring and first fall frost at NOAA station USC00450013, 1957 to 2003, measured from daily minimum temperatures.
Elevation 435 ft, 47.261, -123.715. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 2 | Oct 18 |
| Earliest | Mar 26 (1994) | Aug 13 (2003) |
| Latest | Jun 4 (1976) | Nov 16 (1987) |
| Trend | 7.0 days earlier per decade | 3.4 days later per decade |
| Years with data | 43 | 44 |
At 28°F (hard freeze) the median last spring date is Mar 5 and the median first fall date is Nov 16.
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 |
|---|---|---|---|---|
| 2003 | Apr 25 | Aug 13 | Feb 25 | Aug 13 |
| 2002 | no data | Oct 30 | no data | Oct 30 |
| 2000 | Apr 24 | Nov 9 | Feb 19 | Nov 15 |
| 1999 | May 13 | Oct 15 | Jan 3 | none |
| 1998 | Apr 19 | Nov 7 | Jan 12 | Dec 19 |
| 1997 | Apr 11 | Nov 12 | Feb 21 | none |
| 1996 | May 9 | Oct 16 | Mar 25 | Nov 23 |
| 1995 | Apr 20 | Oct 29 | Mar 7 | Oct 31 |
| 1994 | Mar 26 | Nov 2 | Feb 8 | Nov 18 |
| 1993 | Apr 19 | Nov 4 | Feb 28 | Nov 23 |
| 1992 | Apr 23 | Oct 15 | Jan 7 | Nov 24 |
| 1991 | Apr 12 | Oct 28 | Mar 5 | Oct 30 |
| 1990 | Mar 27 | Oct 19 | Feb 26 | Dec 19 |
| 1989 | Apr 17 | Oct 29 | Mar 4 | Dec 12 |
| 1988 | May 1 | Oct 27 | Mar 29 | Dec 15 |
| 1987 | Apr 25 | Nov 16 | Feb 25 | Nov 17 |
| 1986 | Apr 30 | Nov 8 | Feb 20 | Nov 11 |
| 1985 | May 12 | Oct 8 | Mar 29 | Nov 11 |
| 1984 | May 6 | Oct 15 | Jan 22 | Dec 2 |
| 1983 | May 10 | Oct 1 | Jan 1 | Dec 1 |
| 1982 | May 5 | Oct 18 | Mar 19 | Nov 9 |
| 1981 | Apr 25 | Oct 11 | Mar 5 | Nov 28 |
| 1980 | Apr 16 | Oct 22 | Feb 13 | Dec 7 |
| 1979 | Apr 16 | Oct 31 | Feb 15 | Nov 14 |
| 1978 | May 5 | Oct 21 | Mar 3 | Nov 10 |
| 1977 | May 12 | Oct 4 | Apr 19 | Nov 8 |
| 1976 | Jun 4 | Oct 18 | Apr 2 | Nov 26 |
| 1975 | May 25 | Oct 22 | Apr 21 | Nov 18 |
| 1974 | May 17 | Oct 7 | Mar 21 | Dec 23 |
| 1973 | May 26 | Oct 2 | Apr 28 | Nov 2 |
| 1972 | Apr 30 | Sep 25 | Apr 22 | Oct 30 |
| 1971 | May 17 | Sep 30 | Apr 12 | Oct 28 |
| 1970 | May 13 | Sep 13 | Apr 13 | Oct 27 |
| 1969 | Apr 30 | Oct 10 | Mar 24 | Oct 13 |
| 1968 | May 2 | Oct 18 | Apr 17 | Dec 12 |
| 1967 | May 25 | Oct 26 | Apr 15 | Nov 26 |
| 1966 | Jun 1 | Oct 13 | Apr 19 | Nov 10 |
| 1964 | May 26 | no data | Apr 19 | no data |
| 1963 | May 16 | Oct 19 | Apr 2 | Nov 28 |
| 1962 | May 30 | Nov 16 | Mar 28 | Dec 24 |
| 1961 | May 11 | Sep 22 | Mar 4 | Nov 2 |
| 1960 | Apr 22 | Oct 9 | Mar 4 | Dec 7 |
| 1959 | May 11 | Oct 29 | Jan 20 | Nov 5 |
| 1958 | Apr 27 | Sep 23 | Mar 14 | Nov 15 |
| 1957 | no data | Oct 4 | no data | Nov 2 |
"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.