Frost history / Grantsville 2W, UT
Grantsville 2W, UT: frost dates by year
Last spring and first fall frost at NOAA station USC00423348, 2000 to 2025, measured from daily minimum temperatures.
Elevation 4,550 ft, 40.602, -112.507. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 3 | Oct 15 |
| Earliest | Apr 17 (2015) | Sep 10 (2016) |
| Latest | May 18 (2017) | Nov 5 (2015) |
| Trend | 2.4 days earlier per decade | 2.1 days later per decade |
| Years with data | 23 | 26 |
At 28°F (hard freeze) the median last spring date is Apr 19 and the median first fall date is Oct 27.
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 | Apr 19 | Oct 21 | Apr 19 | Oct 28 |
| 2024 | May 8 | Oct 25 | May 8 | Nov 6 |
| 2023 | Apr 26 | Oct 27 | Apr 20 | Oct 27 |
| 2022 | May 11 | Oct 23 | Apr 15 | Oct 25 |
| 2021 | Apr 22 | Oct 13 | Apr 20 | Nov 18 |
| 2020 | May 7 | Oct 16 | Apr 17 | Oct 23 |
| 2019 | May 2 | Oct 5 | Mar 18 | Oct 11 |
| 2018 | Apr 20 | Oct 14 | Apr 14 | Oct 15 |
| 2017 | May 18 | Oct 3 | Apr 6 | Oct 15 |
| 2016 | Apr 29 | Sep 10 | Apr 29 | Sep 10 |
| 2015 | Apr 17 | Nov 5 | Apr 16 | Nov 8 |
| 2014 | Apr 29 | Oct 23 | Apr 15 | Oct 28 |
| 2013 | May 3 | Oct 4 | Apr 19 | Nov 4 |
| 2012 | May 7 | Oct 8 | Apr 28 | Oct 26 |
| 2011 | May 5 | Oct 27 | Apr 8 | Oct 27 |
| 2010 | May 7 | Oct 26 | May 7 | Nov 9 |
| 2009 | Apr 27 | Oct 1 | Apr 6 | Nov 9 |
| 2008 | May 4 | Oct 12 | May 2 | Oct 13 |
| 2007 | Apr 21 | Oct 18 | Apr 12 | Oct 23 |
| 2006 | May 11 | Oct 22 | Apr 19 | Oct 22 |
| 2005 | no data | Oct 5 | no data | Oct 31 |
| 2004 | May 14 | Oct 30 | Apr 29 | Nov 2 |
| 2003 | no data | Oct 31 | no data | Oct 31 |
| 2002 | May 10 | Oct 12 | May 8 | Oct 29 |
| 2001 | no data | Oct 10 | no data | Oct 24 |
| 2000 | Apr 26 | Sep 24 | Apr 26 | Nov 2 |
"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.