Frost history / Sutton 1 W, AK
Sutton 1 W, AK: frost dates by year
Last spring and first fall frost at NOAA station USC00508915, 1978 to 2011, measured from daily minimum temperatures.
Elevation 550 ft, 61.714, -148.909. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 8 | Sep 2 |
| Earliest | May 29 (1980) | Aug 3 (1996) |
| Latest | Jul 7 (1982) | Sep 29 (2005) |
| Trend | 2.8 days earlier per decade | 7.1 days later per decade |
| Years with data | 32 | 31 |
At 28°F (hard freeze) the median last spring date is May 26 and the median first fall date is Sep 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 |
|---|---|---|---|---|
| 2011 | Jun 8 | no data | May 15 | no data |
| 2010 | Jun 5 | Sep 15 | May 16 | Oct 4 |
| 2009 | Jun 24 | Sep 18 | Jun 24 | Sep 24 |
| 2008 | May 30 | Sep 20 | May 18 | Sep 23 |
| 2007 | Jun 8 | Sep 17 | May 20 | Sep 17 |
| 2006 | Jun 7 | Sep 3 | Jun 7 | Sep 30 |
| 2005 | Jun 4 | Sep 29 | May 5 | Oct 7 |
| 2004 | Jun 3 | Sep 4 | May 4 | Sep 8 |
| 2003 | Jun 4 | Sep 7 | May 28 | Sep 16 |
| 2002 | Jun 2 | Sep 10 | May 13 | Oct 3 |
| 2001 | Jun 9 | Sep 1 | May 26 | Sep 11 |
| 2000 | Jun 11 | Aug 26 | May 26 | Sep 15 |
| 1999 | Jun 10 | Sep 5 | May 12 | Sep 26 |
| 1998 | Jun 2 | Aug 18 | May 20 | Aug 28 |
| 1997 | Jun 17 | Sep 2 | Jun 1 | Sep 26 |
| 1996 | Jun 12 | Aug 3 | Jun 11 | Sep 7 |
| 1995 | Jun 3 | Sep 14 | May 27 | Sep 27 |
| 1994 | Jun 8 | Aug 23 | May 29 | Sep 13 |
| 1993 | Jun 8 | Sep 11 | May 7 | Sep 17 |
| 1992 | Jun 20 | Aug 15 | May 19 | Sep 11 |
| 1991 | Jun 8 | Aug 19 | May 22 | Sep 18 |
| 1990 | no data | Sep 7 | no data | Sep 29 |
| 1989 | Jun 20 | Sep 16 | May 26 | Sep 29 |
| 1988 | Jun 3 | Aug 14 | May 20 | Sep 8 |
| 1987 | Jul 1 | Aug 23 | May 30 | Sep 1 |
| 1986 | Jun 28 | Aug 7 | Jun 13 | Sep 10 |
| 1985 | Jun 4 | Aug 31 | Jun 2 | Sep 13 |
| 1984 | Jun 10 | Aug 27 | May 28 | Aug 29 |
| 1983 | Jun 8 | Sep 6 | May 25 | Sep 6 |
| 1982 | Jul 7 | no data | Jun 4 | no data |
| 1981 | Jun 10 | no data | May 24 | no data |
| 1980 | May 29 | Aug 24 | May 29 | Sep 2 |
| 1979 | Jun 12 | Aug 31 | May 31 | Sep 25 |
| 1978 | no data | Aug 26 | no data | Aug 26 |
"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.