Frost history / St George Island Ap, AK
St George Island Ap, AK: frost dates by year
Last spring and first fall frost at NOAA station USW00025628, 1997 to 2024, measured from daily minimum temperatures.
Elevation 125 ft, 56.600, -169.565. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 2 | Sep 29 |
| Earliest | May 10 (2019) | Aug 28 (2008) |
| Latest | Jul 9 (2012) | Oct 21 (2002) |
| Trend | 3.1 days earlier per decade | 6.5 days later per decade |
| Years with data | 24 | 22 |
At 28°F (hard freeze) the median last spring date is May 6 and the median first fall date is Oct 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 | Jun 7 | no data | Jun 6 | no data |
| 2021 | May 27 | no data | Apr 18 | no data |
| 2020 | May 11 | no data | May 6 | no data |
| 2019 | May 10 | Oct 6 | May 1 | Oct 20 |
| 2018 | May 14 | Oct 19 | May 6 | Nov 27 |
| 2016 | May 20 | Oct 17 | May 6 | Oct 21 |
| 2015 | Jun 7 | Oct 19 | Apr 26 | Nov 12 |
| 2014 | Jun 22 | Oct 5 | Apr 18 | Oct 14 |
| 2013 | May 29 | Sep 28 | May 18 | Nov 11 |
| 2012 | Jul 9 | Sep 8 | May 13 | Sep 21 |
| 2011 | Jul 2 | Sep 25 | May 10 | Oct 17 |
| 2010 | Jun 10 | Oct 1 | May 23 | Nov 2 |
| 2009 | Jun 27 | Sep 25 | May 6 | Sep 25 |
| 2008 | no data | Aug 28 | no data | Oct 11 |
| 2007 | Jun 14 | Oct 8 | May 20 | Nov 2 |
| 2006 | Jun 2 | Sep 17 | Jun 2 | Dec 3 |
| 2005 | May 22 | Oct 1 | Apr 23 | Nov 7 |
| 2004 | May 19 | Oct 7 | Apr 29 | Oct 29 |
| 2003 | May 25 | Oct 20 | Apr 28 | Nov 12 |
| 2002 | May 16 | Oct 21 | Apr 18 | Nov 8 |
| 2001 | Jun 9 | Sep 17 | May 6 | Oct 11 |
| 2000 | Jun 25 | Sep 14 | May 22 | Oct 9 |
| 1999 | Jun 13 | Sep 26 | Jun 13 | Oct 13 |
| 1998 | May 23 | Sep 26 | May 23 | Sep 27 |
| 1997 | Jun 2 | Sep 20 | May 3 | Oct 24 |
"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.