Frost history / City Creek Wtp, UT
City Creek Wtp, UT: frost dates by year
Last spring and first fall frost at NOAA station USC00421446, 2001 to 2025, measured from daily minimum temperatures.
Elevation 5,340 ft, 40.815, -111.832. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 21 | Oct 9 |
| Earliest | Apr 17 (2015) | Sep 18 (2003) |
| Latest | Jun 9 (2019) | Oct 27 (2023) |
| Trend | 3.4 days earlier per decade | 8.4 days later per decade |
| Years with data | 22 | 24 |
At 28°F (hard freeze) the median last spring date is Apr 20 and the median first fall date is Oct 17.
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 24 | Oct 25 | May 2 | Nov 1 |
| 2023 | Apr 23 | Oct 27 | Apr 20 | Oct 27 |
| 2022 | May 23 | Oct 23 | May 10 | Oct 24 |
| 2021 | May 22 | Oct 13 | Apr 12 | Oct 13 |
| 2020 | May 23 | Oct 15 | Apr 17 | Oct 23 |
| 2019 | Jun 9 | Sep 22 | Apr 12 | Oct 8 |
| 2018 | Apr 30 | Oct 9 | Apr 18 | Oct 15 |
| 2017 | May 18 | Sep 23 | May 18 | Oct 3 |
| 2016 | no data | Oct 4 | no data | Oct 20 |
| 2015 | Apr 17 | Oct 27 | Apr 16 | Nov 7 |
| 2014 | May 13 | Oct 22 | May 13 | Nov 4 |
| 2013 | May 23 | Sep 28 | May 2 | Oct 15 |
| 2012 | May 6 | Oct 5 | Apr 7 | Oct 17 |
| 2011 | May 30 | Oct 6 | May 1 | Oct 26 |
| 2010 | May 24 | Oct 13 | May 23 | Oct 27 |
| 2009 | May 13 | Oct 1 | Apr 16 | Oct 1 |
| 2008 | no data | Oct 10 | no data | Oct 10 |
| 2007 | May 23 | no data | Apr 20 | no data |
| 2006 | May 28 | Sep 22 | Apr 19 | Oct 18 |
| 2005 | May 12 | Oct 5 | Apr 15 | Nov 13 |
| 2004 | Apr 30 | Sep 21 | Apr 22 | Sep 30 |
| 2003 | May 20 | Sep 18 | May 19 | Oct 17 |
| 2002 | May 23 | Oct 13 | May 22 | Oct 13 |
| 2001 | no data | Oct 10 | no data | Oct 12 |
"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.