Frost history / Greenville 1 Nne, NH
Greenville 1 Nne, NH: frost dates by year
Last spring and first fall frost at NOAA station USC00273658, 2008 to 2024, measured from daily minimum temperatures.
Elevation 900 ft, 42.783, -71.799. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 2 | Oct 13 |
| Earliest | Apr 20 (2014) | Sep 20 (2020) |
| Latest | May 18 (2023) | Oct 29 (2021) |
| Trend | 2.3 days later per decade | 4.0 days later per decade |
| Years with data | 14 | 15 |
At 28°F (hard freeze) the median last spring date is Apr 22 and the median first fall date is Oct 20.
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 |
|---|---|---|---|---|
| 2024 | Apr 27 | Oct 17 | Apr 26 | Oct 17 |
| 2023 | May 18 | Oct 24 | May 18 | Oct 31 |
| 2022 | May 9 | Oct 9 | Apr 21 | Oct 28 |
| 2021 | Apr 23 | Oct 29 | Apr 23 | Oct 29 |
| 2020 | May 14 | Sep 20 | May 13 | Sep 21 |
| 2019 | no data | Oct 5 | no data | Oct 20 |
| 2018 | no data | Oct 18 | no data | Oct 19 |
| 2017 | May 10 | Oct 13 | Apr 14 | Nov 9 |
| 2016 | Apr 27 | Oct 11 | Apr 27 | Oct 15 |
| 2015 | May 2 | Sep 27 | Apr 10 | Oct 18 |
| 2014 | Apr 20 | Oct 20 | Apr 20 | Nov 8 |
| 2013 | May 15 | Oct 10 | Apr 26 | Oct 26 |
| 2012 | May 1 | Oct 13 | Apr 7 | Oct 13 |
| 2011 | Apr 24 | Oct 7 | Apr 16 | Oct 28 |
| 2010 | May 14 | no data | Apr 14 | no data |
| 2009 | no data | Oct 13 | no data | Oct 15 |
| 2008 | May 2 | no data | May 2 | no data |
"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.