Frost history / Deer Park Ap, WA
Deer Park Ap, WA: frost dates by year
Last spring and first fall frost at NOAA station USW00094119, 1999 to 2024, measured from daily minimum temperatures.
Elevation 2,191 ft, 47.974, -117.428. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 30 | Sep 12 |
| Earliest | Apr 28 (2023) | Aug 20 (2000) |
| Latest | Jul 31 (2006) | Oct 12 (2023) |
| Trend | 5.5 days earlier per decade | 8.2 days later per decade |
| Years with data | 26 | 26 |
At 28°F (hard freeze) the median last spring date is May 10 and the median first fall date is Oct 1.
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 |
|---|---|---|---|---|
| 2024 | Jun 15 | Sep 21 | May 30 | Sep 30 |
| 2023 | Apr 28 | Oct 12 | Apr 19 | Oct 24 |
| 2022 | May 22 | Sep 17 | May 12 | Oct 18 |
| 2021 | Jun 7 | Sep 16 | May 19 | Oct 7 |
| 2020 | May 8 | Sep 8 | May 4 | Oct 15 |
| 2019 | May 4 | Sep 27 | May 1 | Oct 1 |
| 2018 | Jun 12 | Sep 17 | Apr 23 | Oct 3 |
| 2017 | May 15 | Sep 16 | May 15 | Oct 3 |
| 2016 | May 30 | Sep 9 | Apr 25 | Oct 11 |
| 2015 | Jun 13 | Sep 16 | May 6 | Sep 27 |
| 2014 | May 13 | Sep 11 | May 12 | Oct 3 |
| 2013 | May 25 | Sep 27 | May 2 | Oct 3 |
| 2012 | Jun 9 | Sep 11 | May 12 | Sep 11 |
| 2011 | Jun 9 | Sep 21 | May 4 | Oct 8 |
| 2010 | May 24 | Aug 29 | May 24 | Oct 12 |
| 2009 | May 21 | Sep 8 | May 15 | Sep 21 |
| 2008 | Jul 11 | Sep 1 | May 9 | Sep 23 |
| 2007 | May 29 | Sep 10 | May 25 | Sep 20 |
| 2006 | Jul 31 | Aug 31 | May 13 | Sep 16 |
| 2005 | Apr 30 | Sep 5 | Apr 28 | Sep 21 |
| 2004 | Jun 15 | Sep 20 | May 10 | Sep 20 |
| 2003 | May 19 | Sep 13 | May 7 | Oct 10 |
| 2002 | Jun 7 | Sep 21 | May 16 | Sep 22 |
| 2001 | May 30 | Sep 6 | May 6 | Sep 29 |
| 2000 | May 8 | Aug 20 | May 7 | Sep 9 |
| 1999 | Jun 10 | Sep 1 | May 11 | Oct 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.