Frost history / Idleyld Park 4 Ne, OR
Idleyld Park 4 Ne, OR: frost dates by year
Last spring and first fall frost at NOAA station USC00354126, 1961 to 2013, measured from daily minimum temperatures.
Elevation 1,080 ft, 43.371, -122.965. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 12 | Oct 5 |
| Earliest | Apr 2 (2004) | Aug 28 (2000) |
| Latest | Jun 24 (1985) | Nov 26 (2012) |
| Trend | 2.8 days earlier per decade | 1.8 days later per decade |
| Years with data | 50 | 51 |
At 28°F (hard freeze) the median last spring date is Apr 2 and the median first fall date is Nov 4.
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 |
|---|---|---|---|---|
| 2013 | May 1 | Oct 5 | May 1 | Nov 21 |
| 2012 | May 11 | Nov 26 | Mar 8 | Dec 31 |
| 2011 | May 4 | Oct 25 | Apr 22 | Oct 25 |
| 2010 | Apr 25 | Oct 27 | Apr 9 | Nov 23 |
| 2009 | May 20 | Oct 6 | Apr 24 | Dec 3 |
| 2008 | May 12 | Oct 9 | Apr 3 | Oct 12 |
| 2007 | Apr 20 | Sep 24 | Feb 2 | Oct 26 |
| 2006 | May 9 | Oct 10 | Mar 20 | Oct 30 |
| 2005 | Apr 15 | Sep 24 | Mar 15 | Nov 9 |
| 2004 | Apr 2 | Nov 4 | Apr 2 | Nov 21 |
| 2003 | May 19 | Oct 31 | Feb 26 | Oct 31 |
| 2002 | May 16 | Oct 11 | May 8 | Oct 27 |
| 2001 | May 6 | Oct 18 | Apr 14 | Nov 7 |
| 2000 | Apr 24 | Aug 28 | Mar 30 | Oct 23 |
| 1999 | Jun 9 | Sep 27 | Apr 2 | Oct 15 |
| 1998 | no data | Oct 21 | no data | Dec 9 |
| 1997 | May 2 | Oct 25 | Apr 5 | Dec 2 |
| 1996 | Jun 18 | Oct 17 | May 4 | Dec 15 |
| 1995 | May 13 | Oct 13 | Mar 26 | Nov 4 |
| 1994 | May 1 | Oct 3 | Mar 6 | Nov 3 |
| 1993 | Apr 19 | Sep 20 | Feb 28 | Nov 2 |
| 1992 | no data | Sep 14 | no data | Oct 14 |
| 1991 | Apr 28 | Sep 21 | Mar 16 | Oct 30 |
| 1990 | May 16 | Oct 6 | Mar 13 | Oct 7 |
| 1989 | May 12 | Oct 4 | Mar 3 | Oct 29 |
| 1988 | Apr 23 | Sep 17 | Mar 16 | Nov 30 |
| 1987 | no data | Sep 16 | no data | Nov 26 |
| 1986 | May 15 | Sep 12 | Apr 24 | Nov 25 |
| 1985 | Jun 24 | Sep 29 | Mar 15 | Oct 8 |
| 1984 | May 31 | Sep 24 | Jan 31 | Nov 22 |
| 1983 | Apr 27 | Sep 30 | Apr 14 | Dec 21 |
| 1982 | May 19 | Oct 19 | May 4 | Oct 19 |
| 1981 | May 12 | Sep 25 | Mar 17 | Nov 28 |
| 1980 | May 16 | Oct 22 | Apr 3 | Nov 12 |
| 1979 | May 30 | Nov 8 | Feb 3 | Nov 11 |
| 1978 | May 30 | Oct 22 | Apr 12 | Oct 31 |
| 1977 | Apr 20 | no data | Apr 19 | no data |
| 1976 | Jun 5 | Oct 4 | Apr 2 | Nov 27 |
| 1975 | May 25 | Oct 14 | Apr 20 | Nov 18 |
| 1974 | May 30 | Sep 27 | Apr 13 | Oct 5 |
| 1973 | May 26 | Sep 1 | Apr 7 | Nov 3 |
| 1972 | May 24 | Sep 27 | Apr 30 | Oct 30 |
| 1971 | Apr 29 | Oct 17 | Mar 20 | Oct 17 |
| 1970 | Apr 27 | Sep 13 | Apr 12 | Sep 13 |
| 1969 | May 2 | Oct 5 | Mar 25 | Oct 14 |
| 1968 | May 8 | no data | Apr 22 | no data |
| 1967 | May 25 | Oct 26 | Apr 19 | Dec 12 |
| 1966 | May 23 | Oct 16 | Apr 28 | Dec 21 |
| 1965 | May 17 | Sep 17 | Mar 25 | Sep 17 |
| 1964 | May 25 | Sep 26 | Apr 20 | Nov 14 |
| 1963 | May 15 | Oct 26 | Mar 13 | Oct 27 |
| 1962 | May 14 | Nov 7 | Mar 18 | Dec 24 |
| 1961 | Apr 26 | Sep 23 | Apr 7 | Nov 5 |
"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.