Frost history / Mt Leconte, TN
Mt Leconte, TN: frost dates by year
Last spring and first fall frost at NOAA station USC00406328, 1988 to 2025, measured from daily minimum temperatures.
Elevation 6,493 ft, 35.655, -83.441. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 20 | Sep 29 |
| Earliest | Apr 29 (2022) | Aug 7 (2004) |
| Latest | Jul 24 (2009) | Oct 24 (1994) |
| Trend | 3.6 days earlier per decade | 4.5 days later per decade |
| Years with data | 34 | 37 |
At 28°F (hard freeze) the median last spring date is May 12 and the median first fall date is Oct 9.
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 |
|---|---|---|---|---|
| 2025 | May 23 | Oct 20 | May 8 | Oct 20 |
| 2024 | May 12 | Sep 8 | Apr 23 | Oct 15 |
| 2023 | May 6 | Oct 7 | May 6 | Oct 8 |
| 2022 | Apr 29 | Sep 27 | Apr 27 | Oct 10 |
| 2021 | Jun 1 | Sep 24 | May 14 | Sep 24 |
| 2020 | May 13 | Sep 21 | May 13 | Oct 2 |
| 2019 | Jun 15 | Oct 17 | May 15 | Oct 17 |
| 2018 | May 1 | Oct 12 | Apr 30 | Oct 21 |
| 2017 | May 25 | Oct 17 | May 8 | Oct 24 |
| 2016 | May 17 | Oct 9 | May 16 | Oct 22 |
| 2015 | May 23 | Sep 14 | May 2 | Oct 17 |
| 2014 | May 20 | Oct 4 | May 17 | Oct 5 |
| 2013 | May 25 | Oct 20 | May 14 | Oct 20 |
| 2012 | May 11 | Sep 19 | Apr 25 | Oct 11 |
| 2011 | May 19 | Oct 1 | May 6 | Oct 1 |
| 2010 | May 10 | Oct 3 | May 10 | Oct 4 |
| 2009 | Jul 24 | Sep 29 | May 21 | Oct 17 |
| 2008 | May 19 | Oct 2 | Apr 30 | Oct 2 |
| 2007 | May 20 | Oct 1 | May 20 | Oct 11 |
| 2006 | May 20 | Sep 21 | May 16 | Sep 29 |
| 2005 | Jun 18 | Oct 17 | Jun 18 | Oct 23 |
| 2004 | no data | Aug 7 | no data | Oct 15 |
| 2003 | no data | Sep 28 | no data | Sep 29 |
| 2002 | May 23 | Oct 14 | May 23 | Oct 17 |
| 2001 | May 24 | Sep 16 | May 23 | Sep 25 |
| 2000 | Jun 7 | Sep 16 | May 16 | Sep 16 |
| 1999 | May 28 | Sep 17 | May 1 | Sep 17 |
| 1998 | no data | Sep 9 | no data | Oct 9 |
| 1997 | May 22 | Oct 15 | May 17 | Oct 15 |
| 1996 | May 14 | Sep 21 | May 14 | Sep 29 |
| 1995 | May 20 | Oct 15 | May 4 | Oct 15 |
| 1994 | May 21 | Oct 24 | May 20 | Oct 26 |
| 1993 | no data | Sep 11 | no data | Sep 28 |
| 1992 | Jun 22 | no data | May 10 | no data |
| 1991 | May 8 | Sep 20 | Apr 23 | Sep 27 |
| 1990 | Jun 6 | Sep 17 | May 12 | Sep 24 |
| 1989 | May 16 | Aug 8 | May 13 | Oct 9 |
| 1988 | Jun 10 | Oct 4 | Apr 30 | 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.