Frost history / Morrisville 4 Ssw, VT
Morrisville 4 Ssw, VT: frost dates by year
Last spring and first fall frost at NOAA station USC00435376, 1963 to 2025, measured from daily minimum temperatures.
Elevation 760 ft, 44.514, -72.624. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 26 | Sep 24 |
| Earliest | Apr 27 (2024) | Aug 31 (1976) |
| Latest | Jun 14 (1970) | Oct 31 (2023) |
| Trend | 2.9 days earlier per decade | 2.6 days later per decade |
| Years with data | 37 | 37 |
At 28°F (hard freeze) the median last spring date is May 15 and the median first fall date is Oct 6.
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 | May 1 | Sep 20 | May 1 | Oct 10 |
| 2024 | Apr 27 | Oct 16 | Apr 27 | Oct 17 |
| 2023 | May 26 | Oct 31 | May 18 | Oct 31 |
| 2022 | May 10 | Sep 30 | May 9 | Oct 3 |
| 2021 | May 28 | Oct 22 | May 7 | Oct 23 |
| 2020 | May 14 | Sep 18 | May 14 | Sep 19 |
| 2019 | May 12 | Sep 19 | May 9 | Oct 5 |
| 2018 | May 18 | Sep 9 | May 13 | Oct 18 |
| 2009 | May 27 | no data | May 27 | no data |
| 2008 | May 26 | Sep 19 | May 6 | Oct 7 |
| 2007 | May 23 | Oct 13 | May 23 | Oct 17 |
| 2006 | May 9 | Sep 11 | May 9 | Oct 7 |
| 2005 | May 21 | Oct 21 | May 14 | Oct 21 |
| 2004 | Jun 1 | Oct 4 | May 9 | Oct 6 |
| 2003 | May 19 | Oct 3 | May 10 | Oct 19 |
| 2002 | Jun 5 | Sep 29 | May 25 | Oct 9 |
| 2001 | Jun 2 | Sep 15 | May 15 | Sep 30 |
| 2000 | May 21 | Sep 25 | May 21 | Sep 29 |
| 1999 | May 15 | Oct 5 | May 15 | Oct 8 |
| 1998 | no data | Sep 24 | no data | Oct 4 |
| 1997 | May 28 | no data | May 27 | no data |
| 1996 | no data | Sep 24 | no data | Oct 4 |
| 1989 | no data | Sep 25 | no data | Sep 28 |
| 1988 | Jun 11 | no data | May 15 | no data |
| 1980 | May 28 | no data | Apr 22 | no data |
| 1979 | May 8 | Sep 20 | May 7 | Sep 20 |
| 1978 | May 8 | Sep 13 | May 4 | Sep 26 |
| 1977 | May 15 | Oct 8 | May 15 | Oct 8 |
| 1976 | no data | Aug 31 | no data | Oct 12 |
| 1974 | May 21 | Sep 17 | May 20 | Sep 23 |
| 1973 | Jun 3 | Sep 17 | May 8 | Sep 21 |
| 1972 | Jun 11 | Sep 7 | May 26 | Sep 20 |
| 1971 | Jun 11 | Sep 25 | Jun 1 | Sep 25 |
| 1970 | Jun 14 | Oct 6 | May 29 | Oct 17 |
| 1969 | May 27 | Sep 19 | May 27 | Sep 20 |
| 1968 | May 27 | Oct 6 | May 8 | Oct 6 |
| 1967 | Jun 1 | Sep 11 | May 22 | Oct 7 |
| 1966 | Jun 2 | Sep 16 | May 14 | Oct 13 |
| 1965 | Jun 3 | Sep 27 | May 24 | Sep 28 |
| 1964 | Jun 6 | Sep 13 | May 21 | Sep 16 |
| 1963 | May 25 | Sep 14 | May 24 | Sep 14 |
"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.