Frost history / Shelton Sanderson Fld, WA
Shelton Sanderson Fld, WA: frost dates by year
Last spring and first fall frost at NOAA station USW00094227, 1998 to 2024, measured from daily minimum temperatures.
Elevation 271 ft, 47.238, -123.141. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 6 | Oct 9 |
| Earliest | Apr 6 (2016) | Sep 12 (2012) |
| Latest | May 20 (2022) | Nov 7 (2014) |
| Trend | 4.0 days earlier per decade | 3.1 days earlier per decade |
| Years with data | 25 | 27 |
At 28°F (hard freeze) the median last spring date is Apr 10 and the median first fall date is Oct 31.
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 | no data | Oct 23 | no data | none |
| 2023 | Apr 20 | Sep 30 | Apr 5 | Oct 27 |
| 2022 | May 20 | Oct 23 | Apr 16 | Nov 8 |
| 2021 | Apr 16 | Sep 16 | Apr 14 | Oct 31 |
| 2020 | May 4 | Oct 21 | Apr 13 | Oct 25 |
| 2019 | Apr 30 | Sep 30 | Mar 11 | Oct 9 |
| 2018 | Apr 23 | Oct 3 | Mar 21 | Nov 8 |
| 2017 | Apr 28 | Oct 3 | Feb 25 | Nov 6 |
| 2016 | Apr 6 | Oct 11 | Mar 29 | Dec 7 |
| 2015 | May 6 | Sep 28 | Mar 6 | Nov 20 |
| 2014 | Apr 26 | Nov 7 | Mar 22 | Nov 13 |
| 2013 | May 3 | Oct 9 | Apr 23 | Oct 29 |
| 2012 | May 19 | Sep 12 | May 11 | Oct 3 |
| 2011 | May 17 | Oct 15 | Apr 29 | Nov 2 |
| 2010 | May 9 | Oct 16 | Apr 10 | Oct 17 |
| 2009 | May 9 | Oct 4 | Apr 23 | Oct 11 |
| 2008 | May 12 | Sep 23 | Apr 26 | Oct 10 |
| 2007 | May 14 | Oct 5 | Apr 3 | Oct 26 |
| 2006 | May 10 | Oct 9 | May 2 | Oct 30 |
| 2005 | Apr 19 | Sep 24 | Mar 22 | Nov 14 |
| 2004 | Apr 28 | Oct 27 | Apr 2 | Nov 5 |
| 2003 | May 19 | Oct 31 | Mar 24 | Oct 31 |
| 2002 | May 8 | Oct 1 | Apr 3 | Oct 12 |
| 2001 | Apr 16 | Oct 28 | Apr 16 | Nov 18 |
| 2000 | May 7 | Oct 30 | Apr 24 | Nov 14 |
| 1999 | May 10 | Sep 28 | Apr 14 | Nov 2 |
| 1998 | no data | Oct 19 | no data | Oct 29 |
"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.