Frost history / Scobey 4 Nw, MT
Scobey 4 Nw, MT: frost dates by year
Last spring and first fall frost at NOAA station USC00247425, 1987 to 2025, measured from daily minimum temperatures.
Elevation 2,390 ft, 48.836, -105.475. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 28 | Sep 7 |
| Earliest | Apr 27 (2018) | Aug 8 (2024) |
| Latest | Jun 30 (2017) | Sep 28 (2019) |
| Trend | 1.9 days later per decade | little change (less than half a day per decade) |
| Years with data | 36 | 35 |
At 28°F (hard freeze) the median last spring date is May 16 and the median first fall date is Sep 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 |
|---|---|---|---|---|
| 2025 | Jun 9 | Sep 6 | May 6 | Sep 6 |
| 2024 | Jun 8 | Aug 8 | May 24 | Oct 3 |
| 2023 | May 19 | Sep 15 | May 19 | Oct 6 |
| 2022 | Jun 3 | Sep 9 | Jun 3 | Sep 10 |
| 2021 | May 21 | Sep 17 | May 13 | Sep 24 |
| 2020 | Jun 5 | Sep 8 | May 11 | Sep 8 |
| 2019 | Jun 9 | Sep 28 | May 28 | Oct 9 |
| 2018 | Apr 27 | Aug 21 | Apr 27 | Sep 5 |
| 2017 | Jun 30 | Sep 5 | May 18 | Oct 4 |
| 2016 | May 16 | no data | May 15 | no data |
| 2015 | Jun 15 | Aug 23 | May 21 | Sep 18 |
| 2013 | May 16 | Sep 20 | May 16 | Oct 5 |
| 2012 | May 20 | Sep 7 | May 11 | Sep 7 |
| 2011 | May 15 | Sep 14 | May 6 | Sep 14 |
| 2010 | Jun 1 | Sep 7 | May 13 | Sep 18 |
| 2009 | Jun 10 | Sep 12 | Jun 2 | Sep 22 |
| 2008 | May 27 | Sep 3 | May 13 | Sep 14 |
| 2007 | May 26 | Aug 29 | May 1 | Sep 9 |
| 2006 | May 15 | Sep 2 | May 11 | Sep 19 |
| 2005 | May 15 | Sep 6 | May 14 | Sep 22 |
| 2004 | Jun 24 | no data | May 25 | no data |
| 2003 | Jun 26 | Aug 31 | May 20 | Sep 14 |
| 2002 | May 26 | Aug 19 | May 24 | Sep 22 |
| 2001 | no data | Sep 10 | no data | Sep 10 |
| 2000 | Jun 2 | no data | Jun 2 | no data |
| 1999 | May 27 | Sep 9 | May 17 | Sep 9 |
| 1998 | Jun 4 | Sep 21 | Jun 4 | Sep 21 |
| 1997 | May 29 | Sep 16 | May 20 | Sep 17 |
| 1996 | May 12 | Sep 7 | May 9 | Sep 24 |
| 1995 | May 28 | Sep 9 | May 24 | Sep 19 |
| 1994 | May 31 | Aug 28 | May 15 | Aug 31 |
| 1993 | May 28 | Sep 6 | May 19 | Sep 14 |
| 1992 | Jun 7 | Aug 30 | May 25 | Sep 10 |
| 1991 | May 6 | Sep 4 | May 6 | Sep 18 |
| 1990 | May 17 | Sep 14 | May 14 | Sep 29 |
| 1989 | May 26 | Sep 11 | May 6 | Sep 11 |
| 1988 | May 22 | Aug 28 | May 4 | Sep 19 |
| 1987 | no data | Sep 8 | no data | Oct 7 |
"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.