Frost history / Scotts Mills 9 Se, OR
Scotts Mills 9 Se, OR: frost dates by year
Last spring and first fall frost at NOAA station USC00357631, 1956 to 2001, measured from daily minimum temperatures.
Elevation 2,315 ft, 44.947, -122.525. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 12 | Oct 20 |
| Earliest | Apr 2 (1989) | Sep 13 (1970) |
| Latest | Jun 13 (1976) | Dec 1 (1997) |
| Trend | 2.2 days earlier per decade | 3.0 days later per decade |
| Years with data | 45 | 44 |
At 28°F (hard freeze) the median last spring date is Apr 13 and the median first fall date is Nov 18.
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 |
|---|---|---|---|---|
| 2001 | May 29 | no data | Apr 14 | no data |
| 2000 | May 12 | Oct 22 | Apr 24 | Nov 10 |
| 1999 | May 10 | Oct 27 | Apr 9 | Dec 30 |
| 1998 | Apr 17 | Oct 29 | Mar 29 | Dec 5 |
| 1997 | Apr 12 | Dec 1 | Apr 5 | Dec 18 |
| 1996 | May 10 | Oct 16 | Mar 28 | Nov 23 |
| 1995 | May 13 | Oct 31 | Apr 19 | Dec 23 |
| 1994 | May 1 | Oct 13 | Mar 23 | Nov 2 |
| 1993 | Apr 19 | Nov 1 | Feb 27 | Nov 14 |
| 1992 | May 21 | Oct 14 | Jan 12 | Nov 29 |
| 1991 | Apr 29 | Oct 28 | Mar 25 | Oct 30 |
| 1990 | May 8 | Oct 6 | Mar 13 | Nov 26 |
| 1989 | Apr 2 | Oct 29 | Mar 4 | Dec 11 |
| 1988 | May 23 | Oct 27 | Apr 8 | Dec 14 |
| 1987 | Apr 24 | Nov 14 | Apr 19 | Nov 28 |
| 1986 | May 22 | Nov 10 | Apr 24 | Nov 10 |
| 1985 | May 12 | Oct 8 | May 11 | Oct 9 |
| 1984 | May 31 | Oct 15 | Feb 22 | Nov 22 |
| 1983 | May 9 | Oct 7 | Apr 13 | Nov 29 |
| 1982 | May 8 | Sep 29 | Apr 29 | Nov 7 |
| 1981 | May 5 | Oct 12 | Apr 13 | Nov 28 |
| 1980 | Apr 29 | Oct 22 | Apr 7 | Nov 12 |
| 1979 | Jun 7 | Nov 18 | Mar 8 | Nov 20 |
| 1978 | May 23 | Oct 21 | Apr 6 | Nov 5 |
| 1977 | May 7 | Nov 3 | Apr 19 | Nov 8 |
| 1976 | Jun 13 | Oct 23 | Apr 15 | Nov 26 |
| 1975 | May 25 | Oct 22 | Apr 20 | Nov 17 |
| 1974 | May 17 | Oct 4 | May 13 | Dec 21 |
| 1973 | Jun 1 | Oct 2 | Apr 28 | Nov 1 |
| 1972 | Apr 30 | Sep 26 | Apr 30 | Sep 27 |
| 1971 | May 20 | Oct 15 | Apr 12 | Oct 16 |
| 1970 | May 13 | Sep 13 | Apr 14 | Oct 7 |
| 1969 | May 4 | Oct 18 | Apr 30 | Oct 31 |
| 1968 | May 7 | Oct 31 | Apr 18 | Nov 15 |
| 1967 | May 25 | Nov 19 | Apr 19 | Nov 26 |
| 1966 | Jun 1 | Oct 13 | Mar 22 | Oct 13 |
| 1965 | May 14 | Sep 17 | Apr 6 | Nov 25 |
| 1964 | May 25 | Oct 17 | May 6 | Oct 26 |
| 1963 | May 3 | Oct 19 | Apr 21 | Nov 20 |
| 1962 | May 12 | Nov 14 | Mar 28 | Nov 23 |
| 1961 | Apr 26 | Oct 8 | Apr 4 | Nov 15 |
| 1960 | May 22 | Oct 9 | May 22 | Nov 22 |
| 1959 | May 4 | Oct 29 | Apr 14 | Nov 4 |
| 1958 | May 13 | Oct 23 | Mar 15 | Nov 14 |
| 1957 | no data | Oct 15 | no data | Nov 27 |
| 1956 | Apr 29 | no data | Apr 5 | no data |
"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.