Frost history / Klawock Ap, AK
Klawock Ap, AK: frost dates by year
Last spring and first fall frost at NOAA station USW00025367, 1998 to 2024, measured from daily minimum temperatures.
Elevation 12 ft, 55.580, -133.075. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 4 | Oct 17 |
| Earliest | Mar 17 (2016) | Sep 29 (1999) |
| Latest | May 18 (2021) | Nov 8 (2008) |
| Trend | 2.5 days earlier per decade | 0.7 days earlier per decade |
| Years with data | 25 | 25 |
At 28°F (hard freeze) the median last spring date is Apr 4 and the median first fall date is Nov 10.
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 | Apr 29 | Oct 21 | Mar 5 | Nov 23 |
| 2023 | May 4 | no data | Apr 2 | no data |
| 2022 | May 8 | Oct 31 | Apr 17 | Nov 2 |
| 2021 | May 18 | Oct 3 | Mar 29 | Oct 17 |
| 2019 | Apr 30 | Oct 13 | Mar 9 | Nov 27 |
| 2018 | Apr 29 | Oct 3 | Apr 4 | Dec 1 |
| 2017 | May 4 | Oct 12 | Mar 21 | Nov 3 |
| 2016 | Mar 17 | Oct 9 | Jan 5 | Nov 17 |
| 2015 | Apr 24 | Oct 4 | Mar 2 | Nov 23 |
| 2014 | May 4 | Oct 26 | Apr 13 | Nov 13 |
| 2013 | Apr 30 | Nov 2 | Apr 30 | Nov 3 |
| 2012 | May 14 | Oct 2 | Apr 8 | Oct 22 |
| 2011 | May 14 | Nov 2 | Mar 24 | Nov 3 |
| 2010 | May 3 | Oct 21 | May 3 | Nov 10 |
| 2009 | Apr 27 | Sep 29 | Apr 3 | Nov 17 |
| 2008 | May 9 | Nov 8 | Apr 25 | Nov 9 |
| 2007 | May 18 | Oct 19 | Apr 3 | Nov 19 |
| 2006 | May 13 | Oct 28 | Apr 16 | Oct 29 |
| 2005 | Apr 17 | Oct 15 | Mar 24 | Nov 28 |
| 2004 | Apr 29 | Oct 17 | Mar 19 | Oct 22 |
| 2003 | May 17 | Oct 29 | May 5 | Oct 29 |
| 2002 | May 9 | Oct 10 | May 6 | Dec 4 |
| 2001 | Apr 20 | Oct 24 | Apr 15 | Nov 25 |
| 2000 | May 8 | Oct 2 | Apr 15 | Nov 9 |
| 1999 | May 13 | Sep 29 | Apr 27 | Dec 13 |
| 1998 | no data | Oct 28 | no data | Nov 8 |
"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.