Frost history / Kivalina Ap, AK
Kivalina Ap, AK: frost dates by year
Last spring and first fall frost at NOAA station USW00026642, 1999 to 2024, measured from daily minimum temperatures.
Elevation 10 ft, 67.732, -164.548. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 13 | Sep 7 |
| Earliest | May 7 (2018) | Aug 13 (2013) |
| Latest | Jun 20 (2002) | Sep 24 (2007) |
| Trend | 5.5 days earlier per decade | 2.7 days earlier per decade |
| Years with data | 21 | 21 |
At 28°F (hard freeze) the median last spring date is May 26 and the median first fall date is Sep 23.
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 | Sep 21 | no data | Oct 9 |
| 2023 | no data | Aug 29 | no data | Sep 23 |
| 2022 | Jun 6 | no data | May 30 | no data |
| 2021 | Jun 10 | no data | May 20 | no data |
| 2020 | no data | Sep 21 | no data | Sep 23 |
| 2018 | May 7 | no data | May 5 | no data |
| 2017 | Jun 2 | Aug 28 | May 21 | Sep 26 |
| 2016 | Jun 9 | Sep 6 | May 14 | Sep 16 |
| 2015 | Jun 11 | Aug 31 | May 10 | Sep 17 |
| 2014 | Jun 13 | Sep 4 | May 21 | Oct 4 |
| 2013 | Jun 12 | Aug 13 | May 19 | Sep 17 |
| 2012 | Jun 16 | Sep 8 | Jun 3 | Sep 16 |
| 2011 | May 31 | Sep 3 | May 31 | Sep 27 |
| 2010 | Jun 13 | Sep 23 | Jun 9 | Sep 24 |
| 2009 | Jun 17 | Sep 7 | May 21 | Sep 23 |
| 2008 | no data | Aug 29 | no data | Sep 12 |
| 2007 | Jun 14 | Sep 24 | May 29 | Sep 29 |
| 2006 | Jun 14 | Aug 19 | Jun 8 | Oct 2 |
| 2005 | Jun 13 | Aug 31 | May 24 | Sep 29 |
| 2004 | Jun 3 | Sep 13 | May 5 | Sep 14 |
| 2003 | Jun 14 | Sep 12 | May 31 | Sep 13 |
| 2002 | Jun 20 | no data | Jun 1 | no data |
| 2001 | Jun 17 | Sep 19 | Jun 10 | Sep 27 |
| 2000 | Jun 4 | Sep 9 | May 26 | Sep 9 |
| 1999 | Jun 15 | Sep 23 | Jun 15 | Oct 4 |
"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.