Frost history / Northfield, VT
Northfield, VT: frost dates by year
Last spring and first fall frost at NOAA station USC00435733, 1951 to 2015, measured from daily minimum temperatures.
Elevation 670 ft, 44.165, -72.657. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 26 | Sep 19 |
| Earliest | May 8 (2006) | Sep 3 (1970) |
| Latest | Jun 20 (1956) | Oct 21 (2005) |
| Trend | 2.7 days earlier per decade | 3.2 days later per decade |
| Years with data | 32 | 32 |
At 28°F (hard freeze) the median last spring date is May 14 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 |
|---|---|---|---|---|
| 2015 | no data | Oct 4 | no data | Oct 18 |
| 2014 | May 9 | no data | May 7 | no data |
| 2013 | May 27 | Sep 17 | May 15 | Sep 30 |
| 2012 | May 13 | Oct 9 | May 13 | Oct 13 |
| 2011 | May 10 | Sep 17 | Apr 23 | Oct 28 |
| 2010 | May 17 | Oct 10 | May 13 | Oct 14 |
| 2009 | May 26 | Sep 26 | May 19 | Oct 12 |
| 2008 | May 28 | Sep 19 | May 2 | Oct 7 |
| 2007 | May 22 | Oct 13 | May 7 | Oct 17 |
| 2006 | May 8 | Sep 27 | Apr 30 | Oct 7 |
| 2005 | May 21 | Oct 21 | May 14 | Oct 21 |
| 2004 | Jun 2 | Oct 4 | May 8 | Oct 6 |
| 2003 | May 18 | Oct 3 | May 18 | Oct 8 |
| 2002 | May 25 | no data | May 22 | no data |
| 2001 | Jun 1 | no data | May 6 | no data |
| 2000 | May 21 | Sep 6 | May 3 | Sep 29 |
| 1999 | May 15 | Oct 6 | May 14 | Oct 8 |
| 1998 | no data | Sep 24 | no data | Oct 5 |
| 1997 | May 28 | no data | May 9 | no data |
| 1996 | May 28 | Sep 24 | May 14 | Oct 4 |
| 1973 | Jun 3 | Sep 17 | Jun 3 | Sep 21 |
| 1972 | Jun 12 | Sep 15 | May 13 | Sep 21 |
| 1971 | Jun 11 | Sep 25 | Jun 1 | Oct 9 |
| 1970 | Jun 14 | Sep 3 | May 29 | Oct 17 |
| 1969 | May 27 | Sep 19 | May 27 | Oct 10 |
| 1968 | no data | Sep 8 | no data | Oct 10 |
| 1967 | May 26 | no data | May 14 | no data |
| 1966 | no data | Sep 16 | no data | Sep 21 |
| 1965 | Jun 3 | no data | Jun 3 | no data |
| 1964 | no data | Sep 13 | no data | Sep 13 |
| 1958 | Jun 7 | Sep 29 | May 27 | Oct 2 |
| 1957 | Jun 9 | Sep 9 | May 20 | Sep 29 |
| 1956 | Jun 20 | Sep 10 | May 27 | Sep 21 |
| 1955 | May 20 | Sep 8 | Apr 17 | Sep 23 |
| 1954 | no data | Sep 13 | no data | Oct 8 |
| 1953 | Jun 3 | Sep 10 | Apr 22 | Sep 24 |
| 1952 | May 17 | Sep 8 | May 5 | Oct 10 |
| 1951 | May 25 | Sep 29 | May 14 | Sep 30 |
"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.