Frost history / Weber Basin Pump Plt 3, UT
Weber Basin Pump Plt 3, UT: frost dates by year
Last spring and first fall frost at NOAA station USC00429346, 2011 to 2025, measured from daily minimum temperatures.
Elevation 4,900 ft, 41.109, -111.912. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 2 | Oct 15 |
| Earliest | Mar 31 (2019) | Sep 21 (2017) |
| Latest | Jun 18 (2024) | Nov 8 (2016) |
| Trend | 7.4 days earlier per decade | 4.0 days later per decade |
| Years with data | 15 | 15 |
At 28°F (hard freeze) the median last spring date is Apr 26 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 28 | Oct 6 | Apr 19 | Oct 29 |
| 2024 | Jun 18 | Oct 25 | May 8 | Oct 25 |
| 2023 | May 7 | Oct 15 | Apr 26 | Oct 28 |
| 2022 | May 31 | Oct 22 | May 30 | Oct 23 |
| 2021 | Mar 31 | Oct 16 | Mar 24 | Nov 16 |
| 2020 | Apr 17 | Oct 22 | Apr 13 | Oct 25 |
| 2019 | Mar 31 | Oct 10 | Mar 15 | Oct 10 |
| 2018 | Apr 20 | Oct 10 | Apr 20 | Nov 8 |
| 2017 | Apr 30 | Sep 21 | Apr 29 | Oct 13 |
| 2016 | May 11 | Nov 8 | Mar 7 | Nov 16 |
| 2015 | Apr 27 | Nov 4 | Apr 16 | Nov 9 |
| 2014 | May 13 | Oct 23 | Apr 29 | Oct 31 |
| 2013 | May 2 | Sep 28 | May 1 | Oct 4 |
| 2012 | Jun 6 | Oct 8 | Apr 28 | Oct 8 |
| 2011 | May 29 | Oct 6 | May 1 | Oct 27 |
"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.