Frost history / Brigham City 28 Wnw, UT
Brigham City 28 Wnw, UT: frost dates by year
Last spring and first fall frost at NOAA station USW00004138, 2008 to 2024, measured from daily minimum temperatures.
Elevation 4,951 ft, 41.616, -112.544. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 18 | Oct 6 |
| Earliest | Apr 17 (2015) | Sep 6 (2010) |
| Latest | Jun 18 (2024) | Oct 27 (2015) |
| Trend | 7.9 days earlier per decade | 10.8 days later per decade |
| Years with data | 17 | 17 |
At 28°F (hard freeze) the median last spring date is May 2 and the median first fall date is Oct 14.
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 |
|---|---|---|---|---|
| 2024 | Jun 18 | Oct 24 | Jun 18 | Oct 25 |
| 2023 | Apr 26 | Oct 26 | Apr 23 | Oct 27 |
| 2022 | Jun 15 | Oct 23 | May 22 | Oct 24 |
| 2021 | May 11 | Oct 12 | May 9 | Oct 13 |
| 2020 | Jun 9 | Sep 9 | Apr 18 | Oct 16 |
| 2019 | May 3 | Sep 29 | May 2 | Oct 5 |
| 2018 | May 3 | Oct 12 | May 1 | Oct 14 |
| 2017 | May 18 | Sep 20 | May 18 | Oct 9 |
| 2016 | May 11 | Oct 6 | Apr 6 | Oct 6 |
| 2015 | Apr 17 | Oct 27 | Apr 15 | Nov 4 |
| 2014 | May 13 | Oct 2 | Apr 23 | Oct 27 |
| 2013 | May 24 | Sep 28 | May 2 | Oct 5 |
| 2012 | Jun 10 | Oct 4 | Apr 28 | Oct 4 |
| 2011 | Jun 17 | Oct 18 | May 5 | Oct 26 |
| 2010 | Jun 17 | Sep 6 | May 7 | Oct 26 |
| 2009 | May 13 | Sep 30 | Apr 27 | Oct 1 |
| 2008 | Jun 12 | Oct 9 | May 10 | Oct 10 |
"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 1991–2020 frost probabilities.