Frost history / Sandstone 6 W, MN
Sandstone 6 W, MN: frost dates by year
Last spring and first fall frost at NOAA station USW00054932, 2007 to 2024, measured from daily minimum temperatures.
Elevation 1,130 ft, 46.114, -92.994. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 10 | Sep 30 |
| Earliest | Apr 25 (2024) | Sep 11 (2020) |
| Latest | May 31 (2015) | Oct 21 (2021) |
| Trend | 8.2 days earlier per decade | 4.2 days later per decade |
| Years with data | 16 | 18 |
At 28°F (hard freeze) the median last spring date is Apr 29 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 | Apr 25 | Oct 8 | Apr 25 | Oct 15 |
| 2023 | May 3 | Sep 13 | Apr 26 | Oct 28 |
| 2022 | May 4 | Sep 27 | May 4 | Sep 28 |
| 2021 | no data | Oct 21 | no data | Oct 22 |
| 2020 | May 12 | Sep 11 | May 12 | Sep 18 |
| 2019 | May 10 | Oct 11 | May 7 | Oct 24 |
| 2018 | May 20 | Sep 28 | Apr 28 | Sep 28 |
| 2017 | Apr 29 | Oct 9 | Apr 29 | Oct 10 |
| 2016 | May 15 | Oct 9 | May 14 | Oct 9 |
| 2015 | May 31 | Sep 30 | Apr 27 | Oct 17 |
| 2014 | May 4 | Oct 7 | Apr 26 | Oct 10 |
| 2013 | May 24 | Oct 14 | May 12 | Oct 19 |
| 2012 | Apr 27 | Sep 24 | Apr 27 | Sep 27 |
| 2011 | May 4 | Sep 14 | May 3 | Sep 15 |
| 2010 | May 9 | Sep 26 | May 9 | Oct 3 |
| 2009 | May 31 | Sep 30 | Apr 28 | Oct 9 |
| 2008 | May 12 | Oct 3 | Apr 29 | Oct 3 |
| 2007 | no data | Sep 12 | no data | Sep 14 |
"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.