Frost history / Rexburg Madison Co Ap, ID
Rexburg Madison Co Ap, ID: frost dates by year
Last spring and first fall frost at NOAA station USW00094194, 1999 to 2024, measured from daily minimum temperatures.
Elevation 4,858 ft, 43.834, -111.805. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 22 | Sep 24 |
| Earliest | May 3 (2018) | Sep 6 (2016) |
| Latest | Jun 18 (2010) | Oct 26 (2023) |
| Trend | 7.7 days earlier per decade | 9.6 days later per decade |
| Years with data | 24 | 24 |
At 28°F (hard freeze) the median last spring date is May 4 and the median first fall date is Oct 9.
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 | May 23 | Oct 1 | May 2 | Oct 19 |
| 2023 | May 10 | Oct 26 | Apr 23 | Oct 27 |
| 2022 | May 23 | Oct 14 | May 10 | Oct 27 |
| 2021 | May 10 | Sep 29 | May 9 | Sep 30 |
| 2020 | May 8 | Sep 28 | Apr 18 | Oct 22 |
| 2019 | Jun 9 | Sep 30 | May 3 | Oct 6 |
| 2018 | May 3 | Sep 25 | Apr 18 | Oct 13 |
| 2017 | May 17 | Sep 23 | Apr 16 | Oct 9 |
| 2016 | May 12 | Sep 6 | May 11 | Oct 12 |
| 2015 | May 11 | Oct 12 | Apr 17 | Oct 28 |
| 2012 | Jun 7 | Oct 4 | May 6 | Oct 4 |
| 2011 | May 18 | Oct 6 | May 2 | Oct 25 |
| 2010 | Jun 18 | Sep 7 | May 8 | Oct 27 |
| 2009 | May 16 | Sep 9 | May 13 | Oct 2 |
| 2008 | Jun 13 | Oct 8 | May 10 | Oct 10 |
| 2007 | May 23 | Sep 26 | Apr 20 | Oct 6 |
| 2006 | May 11 | Sep 17 | May 10 | Oct 17 |
| 2005 | Jun 8 | Sep 14 | May 1 | Oct 5 |
| 2004 | May 31 | Sep 21 | Apr 22 | Oct 24 |
| 2003 | May 20 | Sep 13 | May 20 | Sep 18 |
| 2002 | May 12 | Sep 22 | May 10 | Oct 1 |
| 2001 | Jun 13 | Sep 8 | May 21 | Oct 5 |
| 2000 | Jun 1 | Sep 23 | Apr 30 | Sep 23 |
| 1999 | Jun 9 | Sep 8 | May 11 | Sep 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 1991–2020 frost probabilities.