Frost history / Nabesna, AK
Nabesna, AK: frost dates by year
Last spring and first fall frost at NOAA station USC00506147, 1980 to 2013, measured from daily minimum temperatures.
Elevation 2,920 ft, 62.398, -142.997. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 13 | Aug 21 |
| Earliest | May 30 (2008) | Aug 2 (1991) |
| Latest | Jul 25 (2001) | Sep 4 (2010) |
| Trend | 2.3 days earlier per decade | 3.5 days later per decade |
| Years with data | 27 | 27 |
At 28°F (hard freeze) the median last spring date is May 24 and the median first fall date is Sep 4.
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 |
|---|---|---|---|---|
| 2013 | Jun 6 | Aug 27 | May 24 | Sep 6 |
| 2012 | Jun 2 | Aug 4 | May 20 | Aug 29 |
| 2010 | no data | Sep 4 | no data | Sep 21 |
| 2009 | Jun 26 | Sep 1 | Jun 19 | Sep 20 |
| 2008 | May 30 | Aug 31 | May 8 | Sep 21 |
| 2007 | Jun 9 | Aug 25 | May 12 | Sep 18 |
| 2006 | Jun 26 | Aug 22 | May 15 | Sep 13 |
| 2005 | no data | Aug 16 | no data | Aug 28 |
| 2004 | no data | Aug 28 | no data | Sep 7 |
| 2003 | no data | Aug 23 | no data | Sep 14 |
| 2002 | no data | Sep 4 | no data | Sep 7 |
| 2001 | Jul 25 | no data | May 23 | no data |
| 2000 | Jun 2 | Aug 15 | May 27 | Aug 29 |
| 1999 | Jul 24 | no data | May 30 | no data |
| 1998 | Jul 8 | no data | May 24 | no data |
| 1997 | Jun 4 | Aug 20 | Jun 4 | Sep 14 |
| 1996 | Jun 13 | no data | May 17 | no data |
| 1995 | Jun 7 | Aug 22 | May 23 | Sep 28 |
| 1994 | Jun 27 | Aug 24 | May 30 | Sep 4 |
| 1993 | Jun 10 | Aug 21 | May 12 | Sep 18 |
| 1992 | Jun 24 | Aug 15 | May 21 | Aug 30 |
| 1991 | Jun 9 | Aug 2 | May 15 | Aug 29 |
| 1990 | Jun 7 | Aug 5 | May 24 | Aug 29 |
| 1989 | Jun 26 | Aug 31 | Jun 2 | Aug 31 |
| 1988 | Jun 16 | Aug 10 | May 19 | Aug 24 |
| 1987 | Jun 12 | no data | May 25 | no data |
| 1986 | Jun 13 | Aug 14 | Jun 1 | Aug 23 |
| 1985 | Jun 26 | Aug 25 | May 24 | Sep 6 |
| 1984 | Jun 15 | Aug 13 | May 31 | Aug 13 |
| 1983 | Jun 12 | Aug 15 | May 22 | Aug 17 |
| 1982 | Jul 2 | no data | Jun 4 | no data |
| 1981 | Jul 1 | Aug 16 | Jul 1 | Aug 17 |
| 1980 | no data | Aug 20 | no data | Aug 21 |
"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 1991–2020 frost probabilities.