Frost history / Northome 3S, MN
Northome 3S, MN: frost dates by year
Last spring and first fall frost at NOAA station USC00215989, 2009 to 2025, measured from daily minimum temperatures.
Elevation 1,415 ft, 47.836, -94.256. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 17 | Sep 28 |
| Earliest | Apr 30 (2025) | Sep 9 (2020) |
| Latest | Jun 6 (2009) | Oct 21 (2021) |
| Trend | 14.2 days earlier per decade | 13.6 days later per decade |
| Years with data | 16 | 15 |
At 28°F (hard freeze) the median last spring date is May 8 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 |
|---|---|---|---|---|
| 2025 | Apr 30 | Oct 8 | Apr 30 | Oct 8 |
| 2024 | May 6 | Oct 8 | Apr 24 | Oct 14 |
| 2023 | May 4 | Oct 7 | Apr 27 | Oct 15 |
| 2022 | May 6 | Sep 27 | Apr 29 | Oct 15 |
| 2021 | May 29 | Oct 21 | May 11 | Oct 21 |
| 2020 | May 13 | Sep 9 | May 13 | Sep 18 |
| 2019 | May 29 | Sep 28 | May 8 | Oct 28 |
| 2018 | May 12 | Sep 29 | May 11 | Sep 29 |
| 2017 | May 19 | no data | May 17 | no data |
| 2016 | May 17 | no data | May 15 | no data |
| 2015 | May 30 | Sep 29 | May 19 | Sep 29 |
| 2014 | May 17 | Sep 12 | May 4 | Oct 7 |
| 2013 | no data | Sep 16 | no data | Oct 16 |
| 2012 | May 31 | Sep 14 | Apr 27 | Sep 18 |
| 2011 | May 26 | Sep 15 | May 4 | Sep 15 |
| 2010 | May 10 | Sep 16 | May 9 | Oct 29 |
| 2009 | Jun 6 | Sep 29 | May 15 | Oct 9 |
"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.