Frost history / Wolf Ridge Elc, MN
Wolf Ridge Elc, MN: frost dates by year
Last spring and first fall frost at NOAA station USC00219134, 1993 to 2025, measured from daily minimum temperatures.
Elevation 1,400 ft, 47.450, -91.217. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 19 | Oct 1 |
| Earliest | Apr 25 (2001) | Sep 8 (2020) |
| Latest | Jun 9 (1995) | Oct 21 (2021) |
| Trend | 2.5 days earlier per decade | 3.2 days later per decade |
| Years with data | 32 | 31 |
At 28°F (hard freeze) the median last spring date is Apr 30 and the median first fall date is Oct 11.
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 | May 19 | Oct 8 | Apr 30 | Oct 24 |
| 2024 | May 10 | Oct 10 | Apr 25 | Oct 16 |
| 2023 | May 3 | Oct 7 | Apr 27 | Oct 28 |
| 2022 | May 5 | Sep 27 | May 4 | Sep 28 |
| 2021 | May 29 | Oct 21 | May 28 | Oct 21 |
| 2020 | May 13 | Sep 8 | May 13 | Oct 16 |
| 2019 | May 10 | Oct 4 | May 7 | Oct 13 |
| 2018 | May 20 | Sep 29 | Apr 29 | Sep 29 |
| 2017 | May 19 | Oct 10 | Apr 29 | Oct 10 |
| 2016 | May 17 | Oct 9 | May 15 | Nov 11 |
| 2015 | May 31 | Sep 29 | Apr 26 | Oct 16 |
| 2014 | May 17 | Oct 8 | Apr 27 | Oct 11 |
| 2013 | May 13 | Oct 19 | May 4 | Oct 20 |
| 2012 | Apr 29 | Sep 18 | Apr 21 | Oct 10 |
| 2011 | May 27 | Sep 14 | May 3 | Oct 21 |
| 2010 | May 10 | Oct 2 | Apr 23 | Oct 29 |
| 2009 | May 20 | Sep 30 | Apr 20 | Sep 30 |
| 2008 | May 27 | Oct 3 | May 6 | Oct 3 |
| 2007 | May 21 | Sep 12 | Apr 14 | Oct 28 |
| 2006 | May 21 | no data | Apr 26 | no data |
| 2005 | May 13 | Oct 7 | May 4 | Oct 7 |
| 2004 | May 24 | Oct 2 | May 24 | Oct 4 |
| 2003 | May 3 | Sep 29 | May 2 | Oct 1 |
| 2002 | May 21 | Sep 24 | May 20 | Oct 3 |
| 2001 | Apr 25 | Sep 24 | Apr 25 | Sep 24 |
| 2000 | May 19 | Sep 24 | Apr 21 | Sep 24 |
| 1999 | May 9 | Sep 21 | Apr 24 | Oct 3 |
| 1998 | Jun 5 | Oct 1 | Apr 17 | Oct 21 |
| 1997 | May 21 | Oct 10 | May 15 | Oct 14 |
| 1996 | May 30 | Sep 29 | May 14 | Oct 3 |
| 1995 | Jun 9 | no data | Apr 26 | no data |
| 1994 | May 7 | Oct 2 | May 5 | Oct 26 |
| 1993 | no data | Sep 15 | no data | Oct 3 |
"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.