Frost history / The Dalles, OR
The Dalles, OR: frost dates by year
Last spring and first fall frost at NOAA station USC00358407, 1951 to 2023, measured from daily minimum temperatures.
Elevation 150 ft, 45.607, -121.205. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 4 | Oct 30 |
| Earliest | Feb 17 (1992) | Sep 28 (1999) |
| Latest | May 6 (2000) | Nov 30 (1988) |
| Trend | 0.6 days later per decade | 3.4 days earlier per decade |
| Years with data | 49 | 49 |
At 28°F (hard freeze) the median last spring date is Mar 6 and the median first fall date is Nov 15.
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 |
|---|---|---|---|---|
| 2023 | no data | Oct 26 | no data | Oct 26 |
| 2022 | Apr 17 | Oct 13 | Mar 12 | Nov 9 |
| 2021 | Apr 13 | Oct 12 | Apr 13 | Nov 17 |
| 2020 | Apr 17 | Oct 22 | Mar 18 | Oct 23 |
| 2019 | Mar 21 | Oct 3 | Mar 15 | Oct 10 |
| 2018 | Apr 4 | no data | Apr 4 | no data |
| 2014 | Apr 15 | no data | Mar 22 | no data |
| 2013 | Apr 25 | Oct 16 | Mar 25 | Oct 29 |
| 2012 | Apr 13 | Oct 5 | Apr 8 | Nov 26 |
| 2011 | Apr 23 | Oct 25 | Mar 24 | Oct 26 |
| 2010 | Apr 11 | Oct 17 | Apr 10 | Nov 23 |
| 2009 | no data | Oct 11 | no data | Oct 27 |
| 2007 | Apr 4 | no data | Apr 4 | no data |
| 2006 | no data | Oct 10 | no data | Oct 31 |
| 2000 | May 6 | no data | Mar 25 | no data |
| 1999 | no data | Sep 28 | no data | Oct 16 |
| 1997 | Apr 13 | Oct 25 | Feb 24 | Dec 22 |
| 1996 | no data | Oct 31 | no data | Dec 4 |
| 1995 | no data | Oct 30 | no data | Oct 31 |
| 1994 | Mar 26 | Nov 3 | Mar 22 | Nov 18 |
| 1993 | Mar 12 | Nov 5 | Mar 11 | Nov 7 |
| 1992 | Feb 17 | Nov 10 | Jan 13 | Dec 3 |
| 1991 | Mar 27 | Oct 29 | Feb 1 | Oct 30 |
| 1990 | Mar 25 | Nov 16 | Feb 19 | Dec 19 |
| 1989 | Mar 20 | Oct 29 | Mar 4 | Dec 11 |
| 1988 | Mar 17 | Nov 30 | Feb 24 | Dec 15 |
| 1987 | Mar 30 | Nov 17 | Mar 1 | Dec 13 |
| 1986 | Feb 21 | Nov 10 | Feb 19 | Nov 10 |
| 1985 | Apr 22 | no data | Feb 27 | no data |
| 1984 | Mar 6 | no data | Feb 20 | no data |
| 1983 | Apr 10 | Nov 29 | Feb 7 | Dec 8 |
| 1982 | Apr 20 | Oct 19 | Feb 25 | Nov 11 |
| 1981 | Apr 13 | Oct 22 | Feb 13 | Nov 28 |
| 1980 | Apr 2 | Oct 23 | Feb 16 | Dec 1 |
| 1979 | Mar 10 | Nov 19 | Mar 3 | Nov 23 |
| 1978 | Mar 16 | Oct 26 | Feb 12 | Nov 1 |
| 1977 | Mar 16 | Nov 4 | Jan 29 | Nov 19 |
| 1976 | Apr 3 | Oct 18 | Mar 5 | Oct 19 |
| 1975 | no data | Nov 7 | no data | Nov 8 |
| 1967 | Apr 14 | no data | Mar 12 | no data |
| 1966 | Apr 19 | Nov 23 | Mar 4 | Dec 26 |
| 1965 | Mar 26 | Nov 25 | Mar 24 | Dec 14 |
| 1964 | Apr 17 | Nov 14 | Mar 24 | Nov 15 |
| 1963 | Apr 2 | Oct 26 | Feb 1 | Nov 28 |
| 1962 | Mar 29 | Nov 24 | Mar 13 | Nov 29 |
| 1961 | Apr 19 | Oct 20 | Jan 28 | Nov 5 |
| 1960 | Mar 11 | Nov 4 | Mar 6 | Dec 5 |
| 1959 | Mar 20 | Oct 30 | Feb 2 | Nov 5 |
| 1958 | Mar 11 | Oct 24 | Mar 8 | Nov 16 |
| 1957 | Mar 17 | Nov 2 | Feb 24 | Nov 4 |
| 1956 | Apr 6 | Nov 19 | Mar 13 | Nov 19 |
| 1955 | Apr 17 | Nov 12 | Mar 20 | Nov 12 |
| 1954 | May 1 | Oct 24 | Mar 30 | Nov 30 |
| 1953 | Apr 2 | Nov 2 | Feb 24 | Nov 3 |
| 1952 | Apr 29 | Nov 2 | Mar 22 | Nov 2 |
| 1951 | Apr 21 | Oct 30 | Mar 11 | 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.