Frost history / Bruno 7ENE, MN
Bruno 7ENE, MN: frost dates by year
Last spring and first fall frost at NOAA station USC00211074, 1991 to 2024, measured from daily minimum temperatures.
Elevation 1,253 ft, 46.300, -92.534. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 23 | Sep 21 |
| Earliest | Apr 26 (2024) | Aug 21 (2004) |
| Latest | Jun 21 (1992) | Oct 21 (2021) |
| Trend | 5.8 days earlier per decade | 6.4 days later per decade |
| Years with data | 32 | 31 |
At 28°F (hard freeze) the median last spring date is May 3 and the median first fall date is Sep 29.
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 26 | no data | Apr 24 | no data |
| 2023 | May 4 | Oct 9 | Apr 26 | Oct 28 |
| 2022 | May 5 | Sep 28 | Apr 28 | Sep 28 |
| 2021 | May 29 | Oct 21 | May 29 | Oct 22 |
| 2020 | May 13 | Sep 10 | May 12 | Sep 18 |
| 2019 | May 20 | Oct 12 | May 13 | Oct 14 |
| 2018 | May 20 | no data | Apr 28 | no data |
| 2016 | May 17 | Oct 9 | May 15 | Oct 9 |
| 2015 | May 31 | Sep 30 | Apr 27 | Oct 17 |
| 2014 | May 17 | Sep 13 | Apr 19 | Sep 18 |
| 2013 | May 24 | Oct 20 | May 3 | Oct 20 |
| 2012 | May 16 | Sep 18 | Apr 27 | Sep 23 |
| 2011 | May 27 | Sep 15 | May 16 | Sep 15 |
| 2010 | Jun 7 | Sep 19 | May 9 | Oct 3 |
| 2009 | Jun 6 | Sep 30 | May 11 | Sep 30 |
| 2008 | May 27 | Sep 9 | Apr 30 | Oct 4 |
| 2007 | May 17 | Sep 12 | Apr 27 | Sep 12 |
| 2006 | May 22 | Sep 21 | Apr 25 | Oct 5 |
| 2005 | May 16 | Sep 29 | May 4 | Sep 29 |
| 2004 | May 28 | Aug 21 | May 15 | Oct 2 |
| 2003 | Jun 1 | Sep 20 | May 3 | Sep 29 |
| 2002 | no data | Sep 23 | no data | Sep 24 |
| 2001 | May 12 | Sep 24 | Apr 25 | Sep 24 |
| 2000 | May 19 | Sep 15 | May 19 | Sep 24 |
| 1999 | May 26 | Sep 21 | Apr 24 | Sep 21 |
| 1998 | Jun 4 | Sep 22 | Apr 28 | Sep 22 |
| 1997 | May 27 | Sep 21 | May 15 | Oct 10 |
| 1996 | May 30 | Sep 13 | May 12 | Oct 3 |
| 1995 | Jun 8 | Sep 8 | May 1 | Sep 20 |
| 1994 | May 10 | Sep 29 | May 10 | Oct 10 |
| 1993 | Jun 2 | Sep 5 | May 16 | Oct 2 |
| 1992 | Jun 21 | Sep 19 | May 26 | Sep 29 |
| 1991 | May 19 | Sep 20 | May 3 | Sep 20 |
"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.