Frost history / Farewell Lake, AK
Farewell Lake, AK: frost dates by year
Last spring and first fall frost at NOAA station USC00503009, 1986 to 2008, measured from daily minimum temperatures.
Elevation 1,060 ft, 62.542, -153.621. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 3 | Aug 24 |
| Earliest | May 8 (1994) | Aug 8 (2008) |
| Latest | Jul 29 (2000) | Sep 11 (1990) |
| Trend | 7.5 days later per decade | 3.4 days earlier per decade |
| Years with data | 12 | 11 |
At 28°F (hard freeze) the median last spring date is May 22 and the median first fall date is Sep 11.
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 |
|---|---|---|---|---|
| 2008 | no data | Aug 8 | no data | Sep 25 |
| 2000 | Jul 29 | no data | May 27 | no data |
| 1999 | May 23 | Aug 29 | May 21 | Sep 16 |
| 1998 | Jun 3 | no data | May 17 | no data |
| 1997 | Jun 10 | no data | Jun 2 | no data |
| 1996 | no data | Aug 27 | no data | Aug 28 |
| 1995 | Jun 3 | no data | May 31 | no data |
| 1994 | May 8 | Aug 27 | May 8 | Aug 29 |
| 1993 | May 27 | Aug 24 | May 15 | Sep 12 |
| 1992 | no data | Aug 27 | no data | Sep 4 |
| 1991 | Jun 6 | Aug 21 | May 22 | Aug 21 |
| 1990 | May 26 | Sep 11 | May 6 | Sep 11 |
| 1989 | May 26 | Aug 15 | May 22 | Sep 16 |
| 1988 | Jun 29 | no data | May 3 | no data |
| 1987 | Jun 14 | Aug 20 | May 29 | Aug 21 |
| 1986 | no data | Aug 16 | no data | Sep 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 to 2020 frost probabilities.