Frost history / Arlington 1 W, SD
Arlington 1 W, SD: frost dates by year
Last spring and first fall frost at NOAA station USC00390281, 1992 to 2011, measured from daily minimum temperatures.
Elevation 1,824 ft, 44.363, -97.170. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 6 | Sep 27 |
| Earliest | Apr 14 (2007) | Sep 15 (2011) |
| Latest | May 24 (2002) | Oct 22 (2007) |
| Trend | 2.9 days later per decade | 5.7 days later per decade |
| Years with data | 19 | 20 |
At 28°F (hard freeze) the median last spring date is Apr 22 and the median first fall date is Oct 8.
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 |
|---|---|---|---|---|
| 2011 | May 3 | Sep 15 | May 3 | Oct 19 |
| 2010 | May 9 | Oct 19 | Apr 8 | Oct 28 |
| 2009 | May 16 | Oct 7 | Apr 11 | Oct 9 |
| 2008 | May 11 | Oct 14 | May 3 | Oct 16 |
| 2007 | Apr 14 | Oct 22 | Apr 14 | Oct 27 |
| 2006 | Apr 26 | Sep 20 | Apr 8 | Oct 11 |
| 2005 | May 15 | Oct 6 | May 3 | Oct 7 |
| 2004 | May 14 | Oct 2 | May 14 | Oct 2 |
| 2003 | May 20 | Sep 25 | Apr 9 | Sep 30 |
| 2002 | May 24 | Sep 27 | May 2 | Oct 13 |
| 2001 | Apr 24 | Sep 24 | Apr 22 | Oct 6 |
| 2000 | Apr 17 | Sep 24 | Apr 16 | Sep 24 |
| 1999 | Apr 24 | Oct 1 | Apr 18 | Oct 2 |
| 1998 | Apr 28 | Sep 22 | Apr 17 | Oct 1 |
| 1997 | May 20 | Oct 13 | May 15 | Oct 13 |
| 1996 | May 7 | Oct 3 | May 3 | Oct 3 |
| 1995 | Apr 27 | Sep 22 | Apr 22 | Sep 22 |
| 1994 | May 6 | Sep 26 | Apr 30 | Oct 24 |
| 1993 | Apr 30 | Sep 23 | Apr 20 | Oct 9 |
| 1992 | no data | Sep 28 | no data | Sep 28 |
"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.