Frost history / Dayville 8 Nw, OR
Dayville 8 Nw, OR: frost dates by year
Last spring and first fall frost at NOAA station USC00352173, 1979 to 2023, measured from daily minimum temperatures.
Elevation 2,260 ft, 44.556, -119.645. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 3 | Oct 3 |
| Earliest | Apr 15 (1983) | Aug 24 (1992) |
| Latest | May 28 (1989) | Nov 1 (2022) |
| Trend | 1.9 days earlier per decade | 13.1 days later per decade |
| Years with data | 15 | 11 |
At 28°F (hard freeze) the median last spring date is Apr 14 and the median first fall date is Oct 19.
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 | Apr 26 | no data | Apr 21 | no data |
| 2022 | no data | Nov 1 | no data | Nov 1 |
| 2014 | Apr 28 | no data | Mar 23 | no data |
| 2006 | May 9 | no data | May 9 | no data |
| 2005 | Apr 18 | Oct 29 | Mar 25 | Nov 8 |
| 2004 | no data | Oct 24 | no data | Nov 4 |
| 2001 | May 6 | no data | May 3 | no data |
| 2000 | no data | Sep 23 | no data | Sep 23 |
| 1997 | May 3 | no data | Apr 12 | no data |
| 1996 | May 10 | Sep 21 | May 10 | Sep 25 |
| 1992 | no data | Aug 24 | no data | Oct 14 |
| 1991 | May 3 | Oct 4 | Apr 12 | Oct 22 |
| 1990 | May 8 | Oct 6 | May 8 | Oct 7 |
| 1989 | May 28 | Oct 3 | Mar 23 | Oct 3 |
| 1988 | May 2 | Sep 21 | Apr 9 | Oct 27 |
| 1983 | Apr 15 | no data | Apr 14 | no data |
| 1982 | May 19 | Sep 15 | May 4 | Oct 19 |
| 1981 | May 12 | no data | Apr 10 | no data |
| 1979 | Apr 21 | no data | Apr 20 | 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.