Frost history / Mt Charleston Fire Stn, NV
Mt Charleston Fire Stn, NV: frost dates by year
Last spring and first fall frost at NOAA station USC00265400, 1981 to 2025, measured from daily minimum temperatures.
Elevation 7,460 ft, 36.260, -115.645. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 7 | Sep 28 |
| Earliest | May 9 (2013) | Aug 13 (1981) |
| Latest | Jul 26 (1990) | Nov 4 (2003) |
| Trend | 7.6 days earlier per decade | 6.0 days later per decade |
| Years with data | 45 | 43 |
At 28°F (hard freeze) the median last spring date is May 19 and the median first fall date is Oct 6.
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 15 | no data | Apr 27 | no data |
| 2024 | May 11 | Oct 18 | May 8 | Oct 18 |
| 2023 | May 17 | Oct 1 | May 8 | Oct 2 |
| 2022 | Jun 21 | Oct 23 | Jun 21 | Oct 23 |
| 2021 | May 24 | Sep 30 | May 23 | Oct 9 |
| 2020 | Jun 11 | Sep 9 | Apr 21 | Oct 26 |
| 2019 | May 28 | Sep 30 | May 27 | Sep 30 |
| 2018 | May 14 | Oct 8 | Apr 19 | Oct 14 |
| 2017 | Jun 13 | Sep 22 | May 19 | Sep 22 |
| 2016 | May 26 | Oct 3 | May 22 | Nov 17 |
| 2015 | May 23 | Oct 20 | May 9 | Nov 3 |
| 2014 | May 22 | Sep 28 | May 21 | Nov 2 |
| 2013 | May 9 | Sep 26 | May 7 | Oct 4 |
| 2012 | May 28 | Oct 12 | May 27 | Oct 25 |
| 2011 | Jun 7 | Oct 6 | Jun 3 | Oct 6 |
| 2010 | May 30 | Oct 5 | May 29 | Oct 26 |
| 2009 | Jun 7 | Oct 1 | Apr 29 | Oct 1 |
| 2008 | May 30 | Oct 10 | May 28 | Oct 11 |
| 2007 | Jun 7 | Sep 23 | Jun 7 | Sep 25 |
| 2006 | May 30 | Sep 16 | May 30 | Sep 16 |
| 2005 | Jun 7 | Sep 13 | May 11 | Oct 5 |
| 2004 | Jun 10 | Sep 20 | May 12 | Sep 20 |
| 2003 | Jun 12 | Nov 4 | Jun 12 | Nov 8 |
| 2002 | Jun 10 | Sep 29 | May 21 | Oct 2 |
| 2001 | Jun 14 | Oct 10 | May 3 | Nov 1 |
| 2000 | Jun 9 | Sep 24 | May 13 | Sep 24 |
| 1999 | Jun 5 | Oct 6 | May 16 | Oct 17 |
| 1998 | Jun 17 | Sep 28 | May 22 | Oct 5 |
| 1997 | May 26 | Sep 21 | Apr 26 | Oct 7 |
| 1996 | Jun 30 | Sep 6 | Jun 30 | Sep 14 |
| 1995 | Jul 22 | Aug 17 | Jun 22 | Sep 26 |
| 1994 | Jun 8 | no data | Jun 7 | no data |
| 1993 | Jul 16 | Sep 1 | Jun 9 | Sep 14 |
| 1992 | Jul 2 | Aug 23 | Jun 16 | Oct 3 |
| 1991 | Jun 25 | Sep 10 | Jun 1 | Oct 24 |
| 1990 | Jul 26 | Sep 29 | Mar 10 | Oct 8 |
| 1989 | Jun 2 | Sep 20 | May 15 | Oct 3 |
| 1988 | Jun 1 | Sep 13 | May 30 | Nov 9 |
| 1987 | Jul 18 | Oct 11 | May 27 | Oct 11 |
| 1986 | Jun 22 | Sep 16 | May 17 | Sep 20 |
| 1985 | Jun 4 | Sep 12 | Apr 26 | Sep 12 |
| 1984 | May 16 | Sep 25 | May 16 | Oct 14 |
| 1983 | Jun 2 | Oct 2 | May 14 | Nov 8 |
| 1982 | Jul 1 | Sep 28 | May 12 | Sep 28 |
| 1981 | Jun 15 | Aug 13 | May 17 | Oct 5 |
"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.