Frost history / Almont, ND
Almont, ND: frost dates by year
Last spring and first fall frost at NOAA station USC00320127, 1985 to 2009, measured from daily minimum temperatures.
Elevation 1,915 ft, 46.725, -101.505. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 20 | Sep 17 |
| Earliest | May 6 (1989) | Aug 28 (1988) |
| Latest | Jun 18 (2004) | Oct 9 (2009) |
| Trend | 4.3 days later per decade | 5.0 days later per decade |
| Years with data | 24 | 24 |
At 28°F (hard freeze) the median last spring date is May 12 and the median first fall date is Sep 28.
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 |
|---|---|---|---|---|
| 2009 | May 23 | Oct 9 | May 16 | Oct 9 |
| 2008 | May 20 | no data | May 11 | no data |
| 2007 | May 27 | Sep 14 | Apr 14 | Oct 10 |
| 2006 | May 15 | Sep 19 | May 12 | Sep 20 |
| 2005 | May 15 | Sep 22 | May 15 | Oct 7 |
| 2004 | Jun 18 | Sep 7 | May 14 | Oct 1 |
| 2003 | May 20 | Sep 19 | May 20 | Sep 29 |
| 2002 | May 25 | Sep 22 | May 24 | Sep 26 |
| 2001 | May 24 | Sep 10 | May 24 | Oct 4 |
| 2000 | May 25 | Sep 23 | May 14 | Sep 23 |
| 1999 | May 8 | Sep 10 | Apr 23 | Sep 27 |
| 1998 | Jun 4 | Sep 21 | Jun 4 | Oct 1 |
| 1997 | May 20 | Sep 20 | May 9 | Sep 20 |
| 1996 | May 13 | Sep 11 | Apr 29 | Sep 29 |
| 1995 | May 25 | Sep 8 | Apr 29 | Sep 20 |
| 1994 | May 9 | Sep 1 | May 9 | Oct 9 |
| 1993 | May 19 | Sep 13 | May 19 | Sep 13 |
| 1992 | Jun 6 | Aug 31 | May 26 | Aug 31 |
| 1991 | May 7 | Sep 19 | May 7 | Sep 19 |
| 1990 | May 14 | Sep 19 | May 10 | Sep 23 |
| 1989 | May 6 | Sep 9 | May 6 | Sep 10 |
| 1988 | May 16 | Aug 28 | Apr 28 | Oct 4 |
| 1987 | May 22 | Sep 21 | Apr 21 | Oct 2 |
| 1986 | May 17 | Sep 7 | May 17 | Oct 12 |
| 1985 | no data | Sep 24 | no data | Sep 24 |
"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.