Frost history / Winchester Bay Coast Grd, OR
Winchester Bay Coast Grd, OR: frost dates by year
Last spring and first fall frost at NOAA station USC00353193, 1983 to 1999, measured from daily minimum temperatures.
Elevation 8 ft, 43.681, -124.178. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Mar 26 | Dec 12 |
| Earliest | Jan 4 (1992) | Oct 10 (1999) |
| Latest | May 31 (1984) | Dec 21 (1983) |
| Trend | 12.2 days earlier per decade | 34.7 days earlier per decade |
| Years with data | 13 | 13, 2 with no freeze |
At 28°F (hard freeze) the median last spring date is Feb 9 and the median first fall date is Dec 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 |
|---|---|---|---|---|
| 1999 | Apr 28 | Oct 10 | Mar 7 | none |
| 1995 | Mar 26 | no data | none | no data |
| 1994 | Mar 6 | Nov 18 | Feb 9 | Nov 21 |
| 1993 | Apr 18 | Nov 14 | Feb 26 | Nov 24 |
| 1992 | Jan 4 | none | Jan 4 | none |
| 1991 | Apr 11 | Nov 30 | Jan 30 | none |
| 1990 | Mar 12 | Dec 19 | Feb 14 | Dec 20 |
| 1989 | Feb 28 | Dec 15 | Feb 9 | none |
| 1988 | Mar 15 | Dec 15 | Feb 2 | none |
| 1987 | Mar 28 | Dec 12 | Feb 25 | Dec 24 |
| 1986 | Apr 24 | none | none | none |
| 1985 | Mar 15 | Nov 10 | Feb 17 | Nov 11 |
| 1984 | May 31 | Dec 17 | Jan 17 | Dec 19 |
| 1983 | no data | Dec 21 | no data | Dec 21 |
"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.