Frost history / New Ulm 3SE, MN
New Ulm 3SE, MN: frost dates by year
Last spring and first fall frost at NOAA station USC00215888, 2011 to 2022, measured from daily minimum temperatures.
Elevation 925 ft, 44.294, -94.408. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 29 | Oct 9 |
| Earliest | Apr 19 (2014) | Sep 14 (2014) |
| Latest | May 16 (2016) | Oct 23 (2021) |
| Trend | 1.6 days later per decade | 18.5 days later per decade |
| Years with data | 11 | 12 |
At 28°F (hard freeze) the median last spring date is Apr 21 and the median first fall date is Oct 18.
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 |
|---|---|---|---|---|
| 2022 | Apr 27 | Sep 28 | Apr 27 | Oct 9 |
| 2021 | May 12 | Oct 23 | Apr 22 | Nov 3 |
| 2020 | no data | Oct 18 | no data | Oct 19 |
| 2019 | Apr 29 | Oct 12 | Apr 16 | Oct 14 |
| 2018 | Apr 29 | Sep 29 | Apr 21 | Oct 12 |
| 2017 | Apr 29 | Oct 10 | Apr 8 | Oct 31 |
| 2016 | May 16 | Oct 8 | Apr 13 | Nov 12 |
| 2015 | Apr 28 | Oct 17 | Apr 24 | Oct 17 |
| 2014 | Apr 19 | Sep 14 | Apr 18 | Oct 11 |
| 2013 | May 13 | Oct 14 | Apr 26 | Oct 20 |
| 2012 | Apr 24 | Sep 23 | Apr 14 | Sep 24 |
| 2011 | May 4 | Sep 15 | May 4 | Oct 21 |
"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.