Frost history / Sunderland 2, VT
Sunderland 2, VT: frost dates by year
Last spring and first fall frost at NOAA station USC00438160, 1998 to 2011, measured from daily minimum temperatures.
Elevation 900 ft, 43.091, -73.124. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 17 | Oct 1 |
| Earliest | May 2 (2011) | Sep 17 (2007) |
| Latest | Jun 1 (2009) | Oct 21 (2005) |
| Trend | 4.8 days earlier per decade | 6.4 days earlier per decade |
| Years with data | 13 | 14 |
At 28°F (hard freeze) the median last spring date is May 5 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 |
|---|---|---|---|---|
| 2011 | May 2 | Oct 7 | Apr 23 | Oct 24 |
| 2010 | May 17 | Sep 22 | May 12 | Oct 10 |
| 2009 | Jun 1 | Sep 20 | May 20 | Oct 11 |
| 2008 | May 6 | Sep 19 | May 2 | Oct 7 |
| 2007 | May 22 | Sep 17 | Apr 21 | Oct 29 |
| 2006 | May 8 | Sep 30 | Apr 30 | Oct 13 |
| 2005 | May 19 | Oct 21 | May 13 | Oct 21 |
| 2004 | May 9 | Oct 6 | May 5 | Oct 6 |
| 2003 | May 5 | Oct 2 | May 4 | Oct 3 |
| 2002 | May 22 | Oct 9 | May 21 | Oct 15 |
| 2001 | Jun 1 | Oct 8 | May 15 | Oct 9 |
| 2000 | May 17 | Sep 27 | May 1 | Sep 29 |
| 1999 | May 14 | Oct 7 | May 12 | Oct 7 |
| 1998 | 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.