Frost history / Little Sahara Rec Area, UT
Little Sahara Rec Area, UT: frost dates by year
Last spring and first fall frost at NOAA station USC00425138, 1980 to 2025, measured from daily minimum temperatures.
Elevation 5,230 ft, 39.727, -112.307. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 24 | Sep 30 |
| Earliest | Apr 20 (2015) | Aug 12 (1985) |
| Latest | Jun 18 (2024) | Oct 28 (2015) |
| Trend | 2.8 days earlier per decade | 7.6 days later per decade |
| Years with data | 25 | 19 |
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 14 | no data | Apr 19 | no data |
| 2024 | Jun 18 | no data | May 21 | no data |
| 2023 | no data | Oct 13 | no data | Oct 27 |
| 2021 | no data | Oct 14 | no data | Oct 14 |
| 2020 | May 24 | Oct 16 | Apr 18 | Oct 16 |
| 2019 | May 21 | Sep 30 | May 2 | Oct 1 |
| 2018 | Apr 22 | Sep 27 | Apr 20 | Oct 15 |
| 2017 | no data | Sep 26 | no data | Oct 11 |
| 2016 | May 11 | Oct 4 | Apr 21 | Oct 4 |
| 2015 | Apr 20 | Oct 28 | Apr 19 | Oct 29 |
| 2014 | May 15 | Oct 2 | May 14 | Oct 14 |
| 2013 | May 24 | no data | May 1 | no data |
| 2012 | Jun 1 | Oct 4 | Apr 29 | Oct 7 |
| 2011 | Jun 3 | Oct 7 | Jun 3 | Oct 27 |
| 2009 | no data | Sep 22 | no data | Oct 1 |
| 2005 | Jun 9 | no data | Apr 20 | no data |
| 2004 | May 25 | no data | May 12 | no data |
| 2002 | Jun 9 | no data | Jun 9 | no data |
| 2001 | Jun 13 | Sep 6 | Jun 13 | Oct 9 |
| 2000 | May 13 | Sep 23 | May 11 | Sep 23 |
| 1999 | May 16 | no data | May 10 | no data |
| 1994 | May 22 | no data | May 20 | no data |
| 1990 | May 20 | no data | May 20 | no data |
| 1989 | May 26 | no data | May 13 | no data |
| 1988 | May 31 | Sep 12 | May 21 | Sep 12 |
| 1987 | no data | Sep 18 | no data | Sep 18 |
| 1986 | May 22 | no data | May 22 | no data |
| 1985 | May 30 | Aug 12 | May 30 | Sep 12 |
| 1983 | Jun 13 | no data | May 20 | no data |
| 1982 | no data | Sep 11 | no data | Sep 11 |
| 1981 | no data | Oct 9 | no data | Oct 13 |
| 1980 | May 26 | no data | Apr 16 | no data |
"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.