Frost history / Darrington 21 Nne, WA
Darrington 21 Nne, WA: frost dates by year
Last spring and first fall frost at NOAA station USW00004223, 2003 to 2024, measured from daily minimum temperatures.
Elevation 407 ft, 48.541, -121.446. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 22 | Oct 26 |
| Earliest | Mar 29 (2016) | Oct 8 (2019) |
| Latest | May 13 (2006) | Nov 28 (2024) |
| Trend | little change (less than half a day per decade) | 6.9 days later per decade |
| Years with data | 20 | 22 |
At 28°F (hard freeze) the median last spring date is Mar 19 and the median first fall date is Nov 16.
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 | May 2 | Nov 28 | Apr 17 | Dec 10 |
| 2023 | Apr 14 | Oct 26 | Mar 27 | Oct 27 |
| 2022 | Apr 20 | Nov 3 | Mar 10 | Nov 10 |
| 2021 | no data | Nov 17 | no data | Dec 25 |
| 2020 | Apr 14 | Oct 25 | Apr 13 | Nov 9 |
| 2019 | Apr 30 | Oct 8 | Mar 11 | Oct 10 |
| 2018 | Apr 23 | Oct 21 | Mar 25 | Nov 18 |
| 2017 | Apr 16 | Oct 31 | Feb 25 | Nov 6 |
| 2016 | Mar 29 | Oct 12 | Mar 17 | Dec 5 |
| 2015 | Apr 16 | Nov 10 | Mar 5 | Nov 21 |
| 2014 | Apr 13 | Nov 10 | Mar 22 | Nov 13 |
| 2013 | May 1 | Oct 17 | Mar 25 | Nov 20 |
| 2012 | May 11 | Oct 22 | Mar 23 | Nov 9 |
| 2011 | Apr 23 | Oct 26 | Mar 4 | Nov 6 |
| 2010 | Apr 23 | Oct 17 | Mar 18 | Nov 21 |
| 2009 | Apr 26 | Oct 10 | Mar 13 | Oct 11 |
| 2008 | Apr 26 | Oct 10 | Apr 22 | Dec 14 |
| 2007 | Apr 21 | Oct 26 | Apr 3 | Nov 21 |
| 2006 | May 13 | Oct 23 | Mar 20 | Oct 30 |
| 2005 | Apr 9 | Oct 27 | Feb 25 | Nov 28 |
| 2004 | Apr 2 | Oct 28 | Mar 2 | Nov 28 |
| 2003 | no data | Oct 31 | no data | 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.