Frost history / Elwha Rs, WA
Elwha Rs, WA: frost dates by year
Last spring and first fall frost at NOAA station USC00452548, 1951 to 2017, measured from daily minimum temperatures.
Elevation 360 ft, 48.016, -123.591. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 14 | Nov 10 |
| Earliest | Mar 17 (1990) | Oct 20 (1961) |
| Latest | Jun 2 (1973) | Dec 5 (2016) |
| Trend | 3.5 days earlier per decade | 1.1 days later per decade |
| Years with data | 46 | 38 |
At 28°F (hard freeze) the median last spring date is Mar 1 and the median first fall date is Nov 28.
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 |
|---|---|---|---|---|
| 2017 | Apr 15 | no data | Feb 25 | no data |
| 2016 | no data | Dec 5 | no data | Dec 7 |
| 2015 | Apr 15 | no data | Jan 3 | no data |
| 2014 | Mar 23 | Nov 11 | Feb 9 | Nov 12 |
| 2013 | Mar 23 | Nov 4 | Jan 24 | Nov 21 |
| 2012 | Apr 9 | Nov 9 | Mar 7 | none |
| 2005 | Mar 25 | Nov 9 | Feb 23 | Nov 27 |
| 2004 | Apr 1 | Nov 17 | Feb 13 | none |
| 2003 | Apr 4 | Oct 31 | Feb 26 | Nov 4 |
| 2001 | Apr 14 | Nov 10 | Feb 16 | Dec 26 |
| 2000 | Apr 24 | Nov 10 | Feb 20 | Nov 16 |
| 1999 | May 10 | Nov 1 | Feb 10 | none |
| 1998 | Apr 9 | Dec 3 | Jan 12 | Dec 19 |
| 1997 | Apr 5 | no data | Feb 7 | no data |
| 1996 | Apr 2 | no data | Mar 1 | no data |
| 1992 | Apr 9 | no data | Jan 9 | no data |
| 1991 | Apr 11 | Oct 28 | Jan 29 | Dec 15 |
| 1990 | Mar 17 | no data | Feb 28 | no data |
| 1989 | Mar 23 | Nov 1 | Mar 4 | none |
| 1988 | Apr 9 | Oct 28 | Feb 2 | Dec 17 |
| 1987 | no data | Nov 17 | no data | Dec 13 |
| 1984 | Apr 27 | no data | Jan 21 | no data |
| 1983 | no data | Nov 29 | no data | Nov 30 |
| 1981 | May 15 | Nov 24 | Feb 11 | Dec 29 |
| 1980 | Mar 31 | Nov 12 | Mar 6 | Nov 13 |
| 1979 | Apr 7 | Nov 12 | Feb 15 | Nov 27 |
| 1978 | Apr 23 | Oct 31 | Mar 4 | Nov 11 |
| 1977 | Apr 17 | no data | Mar 14 | no data |
| 1976 | Apr 21 | Nov 13 | Mar 6 | Nov 26 |
| 1975 | Apr 14 | Nov 17 | Mar 28 | Nov 28 |
| 1974 | Mar 25 | Nov 3 | Mar 8 | Dec 23 |
| 1973 | Jun 2 | no data | Feb 8 | no data |
| 1971 | May 17 | no data | Mar 5 | no data |
| 1970 | Apr 26 | Oct 26 | Mar 4 | Nov 21 |
| 1969 | Apr 24 | Nov 14 | Mar 7 | Nov 29 |
| 1968 | no data | Nov 4 | no data | Dec 20 |
| 1967 | Apr 26 | Nov 25 | Mar 13 | Dec 12 |
| 1966 | May 27 | no data | Mar 21 | no data |
| 1963 | May 4 | no data | Mar 24 | no data |
| 1962 | May 4 | Nov 11 | Mar 13 | Dec 23 |
| 1961 | Apr 20 | Oct 20 | Mar 4 | Nov 5 |
| 1960 | Apr 22 | Nov 7 | Mar 4 | Dec 7 |
| 1959 | Apr 7 | Nov 4 | Feb 12 | Nov 13 |
| 1958 | Apr 5 | Nov 12 | none | Nov 16 |
| 1957 | Apr 7 | Oct 22 | Feb 23 | Dec 31 |
| 1956 | Apr 5 | no data | Mar 14 | no data |
| 1955 | Apr 28 | Nov 11 | Mar 20 | Nov 11 |
| 1954 | May 1 | Nov 28 | Mar 29 | Dec 1 |
| 1953 | Apr 10 | Nov 3 | Mar 1 | none |
| 1952 | May 5 | Nov 9 | Mar 21 | Nov 23 |
| 1951 | no data | Oct 30 | no data | Nov 1 |
"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.