Frost history / Tacoma Narrows Ap, WA
Tacoma Narrows Ap, WA: frost dates by year
Last spring and first fall frost at NOAA station USW00094274, 1999 to 2024, measured from daily minimum temperatures.
Elevation 292 ft, 47.267, -122.576. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Mar 13 | Nov 21 |
| Earliest | Feb 2 (2016) | Oct 28 (2023) |
| Latest | Apr 13 (2022) | Dec 25 (1999) |
| Trend | 5.4 days later per decade | 4.5 days earlier per decade |
| Years with data | 26 | 26, 1 with no freeze |
At 28°F (hard freeze) the median last spring date is Feb 4 and the median first fall date is Dec 7.
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 | Mar 7 | none | Jan 16 | none |
| 2023 | Mar 12 | Oct 28 | Mar 1 | none |
| 2022 | Apr 13 | Nov 9 | Feb 25 | Dec 1 |
| 2021 | Apr 5 | Dec 16 | Feb 13 | Dec 26 |
| 2020 | Apr 4 | Nov 9 | none | Dec 24 |
| 2019 | Mar 11 | Nov 21 | Mar 5 | Nov 30 |
| 2018 | Mar 15 | Dec 6 | Feb 23 | Dec 7 |
| 2017 | Mar 19 | Nov 5 | Jan 14 | none |
| 2016 | Feb 2 | Dec 6 | Jan 3 | Dec 16 |
| 2015 | Mar 4 | Nov 26 | Jan 1 | Dec 31 |
| 2014 | Feb 9 | Nov 13 | Feb 7 | Nov 29 |
| 2013 | Mar 22 | Nov 23 | Jan 14 | Dec 4 |
| 2012 | Mar 23 | Nov 10 | none | none |
| 2011 | Apr 8 | Nov 6 | Feb 26 | Nov 20 |
| 2010 | Mar 14 | Nov 21 | none | Nov 22 |
| 2009 | Mar 26 | Nov 14 | Jan 26 | Dec 7 |
| 2008 | Mar 28 | Dec 13 | Jan 26 | Dec 14 |
| 2007 | Feb 27 | Nov 2 | Feb 1 | none |
| 2006 | Mar 10 | Nov 27 | Feb 19 | Nov 27 |
| 2005 | Feb 23 | Nov 28 | Feb 15 | Dec 15 |
| 2004 | Feb 13 | Nov 28 | Jan 6 | none |
| 2003 | Feb 25 | Nov 1 | Feb 25 | Dec 29 |
| 2002 | Mar 8 | Nov 2 | none | none |
| 2001 | Mar 3 | Dec 22 | Feb 7 | none |
| 2000 | Mar 15 | Nov 11 | Jan 29 | Dec 11 |
| 1999 | Mar 28 | Dec 25 | Jan 24 | none |
"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.