Frost history / Pocatello City, ID
Pocatello City, ID: frost dates by year
Last spring and first fall frost at NOAA station USC00107210, 2005 to 2025, measured from daily minimum temperatures.
Elevation 4,460 ft, 42.875, -112.447. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 3 | Oct 9 |
| Earliest | Apr 17 (2015) | Sep 12 (2014) |
| Latest | May 23 (2022) | Oct 26 (2023) |
| Trend | 3.6 days earlier per decade | 6.3 days later per decade |
| Years with data | 17 | 16 |
At 28°F (hard freeze) the median last spring date is Apr 21 and the median first fall date is Oct 25.
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 6 | Apr 18 | Oct 28 |
| 2024 | May 3 | Oct 18 | May 2 | Oct 19 |
| 2023 | Apr 28 | Oct 26 | Apr 19 | Oct 27 |
| 2022 | May 23 | Oct 23 | Apr 13 | Oct 27 |
| 2021 | May 9 | Sep 30 | Apr 21 | Nov 8 |
| 2020 | May 7 | Oct 22 | Apr 17 | Oct 23 |
| 2019 | May 1 | Sep 30 | May 1 | Oct 10 |
| 2018 | May 2 | Oct 8 | Apr 18 | Oct 14 |
| 2016 | no data | Oct 12 | no data | Nov 17 |
| 2015 | Apr 17 | no data | Apr 15 | no data |
| 2014 | May 13 | Sep 12 | Apr 29 | Nov 3 |
| 2013 | May 2 | no data | May 1 | no data |
| 2012 | May 7 | Oct 4 | Apr 7 | Oct 5 |
| 2011 | May 1 | Oct 25 | Apr 30 | Oct 26 |
| 2010 | May 23 | Oct 20 | May 7 | Oct 27 |
| 2009 | no data | Oct 1 | no data | Oct 12 |
| 2008 | May 13 | Oct 10 | May 1 | Oct 13 |
| 2006 | May 9 | Sep 23 | May 9 | Oct 18 |
| 2005 | May 1 | no data | Apr 19 | 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.