Frost history / PORTLAND1 Sw, NY
PORTLAND1 Sw, NY: frost dates by year
Last spring and first fall frost at NOAA station USC00306747, 2012 to 2025, measured from daily minimum temperatures.
Elevation 808 ft, 42.372, -79.487. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 26 | Nov 2 |
| Earliest | Apr 17 (2025) | Oct 13 (2012) |
| Latest | May 13 (2020) | Nov 17 (2020) |
| Trend | 2.2 days earlier per decade | 2.4 days later per decade |
| Years with data | 14 | 14 |
At 28°F (hard freeze) the median last spring date is Apr 16 and the median first fall date is Nov 14.
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 | Apr 17 | Oct 27 | Apr 17 | Nov 10 |
| 2024 | Apr 26 | Oct 27 | Mar 30 | Nov 13 |
| 2023 | Apr 27 | Nov 1 | Apr 10 | Nov 20 |
| 2022 | Apr 30 | Oct 28 | Apr 29 | Nov 18 |
| 2021 | Apr 23 | Nov 5 | Apr 3 | Dec 7 |
| 2020 | May 13 | Nov 17 | May 13 | Nov 18 |
| 2019 | Apr 29 | Nov 7 | Apr 4 | Nov 9 |
| 2018 | Apr 22 | Nov 4 | Apr 21 | Nov 10 |
| 2017 | May 9 | Nov 8 | Mar 24 | Nov 8 |
| 2016 | Apr 27 | Nov 12 | Apr 15 | Nov 21 |
| 2015 | Apr 26 | Oct 19 | Apr 26 | Nov 23 |
| 2014 | Apr 24 | Nov 13 | Apr 24 | Nov 16 |
| 2013 | Apr 26 | Oct 29 | Apr 6 | Oct 29 |
| 2012 | Apr 29 | Oct 13 | Apr 29 | Nov 8 |
"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.