Frost history / Harvey 4NE, ND
Harvey 4NE, ND: frost dates by year
Last spring and first fall frost at NOAA station USC00324013, 1979 to 2025, measured from daily minimum temperatures.
Elevation 1,611 ft, 47.808, -99.876. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 11 | Sep 24 |
| Earliest | Apr 22 (2007) | Sep 6 (1986) |
| Latest | May 29 (2021) | Oct 15 (2021) |
| Trend | 0.9 days later per decade | 1.4 days later per decade |
| Years with data | 33 | 34 |
At 28°F (hard freeze) the median last spring date is May 1 and the median first fall date is Oct 7.
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 29 | Oct 5 | Apr 29 | Oct 18 |
| 2024 | May 24 | Sep 29 | Apr 27 | Oct 14 |
| 2023 | May 1 | no data | May 1 | no data |
| 2022 | May 19 | Sep 21 | Apr 26 | Oct 6 |
| 2021 | May 29 | Oct 15 | May 10 | Oct 20 |
| 2019 | May 19 | no data | May 19 | no data |
| 2018 | no data | Sep 25 | no data | Sep 27 |
| 2017 | Apr 29 | Oct 4 | Apr 28 | Oct 9 |
| 2016 | May 14 | Oct 5 | May 14 | Oct 7 |
| 2015 | May 28 | Sep 28 | May 17 | Oct 8 |
| 2014 | May 14 | Sep 14 | May 14 | Oct 3 |
| 2013 | May 11 | Oct 5 | May 11 | Oct 18 |
| 2012 | Apr 30 | Sep 13 | Apr 28 | Sep 21 |
| 2011 | May 2 | Sep 13 | May 2 | Oct 17 |
| 2010 | May 8 | Sep 17 | May 7 | Oct 16 |
| 2009 | May 18 | Oct 7 | May 15 | Oct 8 |
| 2008 | May 26 | Oct 12 | May 10 | Oct 15 |
| 2007 | Apr 22 | Sep 13 | Apr 13 | Oct 11 |
| 2006 | May 10 | Sep 19 | May 10 | Sep 27 |
| 2005 | no data | Sep 21 | no data | Oct 5 |
| 2003 | May 20 | no data | Apr 30 | no data |
| 2002 | May 24 | no data | May 24 | no data |
| 2001 | Apr 23 | Sep 23 | Apr 23 | Oct 5 |
| 2000 | May 18 | Sep 23 | Apr 20 | Oct 4 |
| 1999 | May 8 | Sep 29 | Apr 23 | Oct 1 |
| 1995 | Apr 27 | Sep 20 | Apr 26 | Sep 21 |
| 1994 | May 5 | Oct 9 | May 5 | Oct 24 |
| 1993 | no data | Sep 14 | no data | Sep 14 |
| 1991 | May 7 | no data | Apr 23 | no data |
| 1990 | May 19 | Sep 15 | May 9 | Oct 7 |
| 1989 | May 6 | Sep 23 | May 6 | Sep 23 |
| 1988 | May 16 | Oct 3 | Apr 25 | Oct 4 |
| 1987 | May 22 | Oct 2 | Apr 21 | Oct 2 |
| 1986 | May 17 | Sep 6 | Apr 21 | Oct 12 |
| 1985 | Apr 27 | Sep 23 | Apr 26 | Sep 24 |
| 1984 | no data | Sep 11 | no data | Sep 26 |
| 1981 | May 10 | Oct 1 | May 10 | Oct 14 |
| 1980 | no data | Sep 26 | no data | Oct 11 |
| 1979 | no data | Oct 4 | no data | Oct 4 |
"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.