Frost history / Emsworth L/D Ohio Rvr, PA
Emsworth L/D Ohio Rvr, PA: frost dates by year
Last spring and first fall frost at NOAA station USC00362574, 2008 to 2025, measured from daily minimum temperatures.
Elevation 717 ft, 40.504, -80.089. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 17 | Nov 1 |
| Earliest | Mar 28 (2010) | Oct 17 (2020) |
| Latest | May 16 (2013) | Nov 14 (2022) |
| Trend | 10.7 days later per decade | 5.3 days later per decade |
| Years with data | 16 | 17 |
At 28°F (hard freeze) the median last spring date is Apr 4 and the median first fall date is Nov 12.
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 | Nov 3 | Apr 10 | Nov 11 |
| 2024 | Apr 23 | no data | Mar 25 | no data |
| 2023 | Apr 26 | Nov 1 | Mar 31 | Nov 2 |
| 2022 | no data | Nov 14 | no data | Nov 19 |
| 2021 | Apr 27 | Nov 4 | Apr 4 | Nov 5 |
| 2020 | May 10 | Oct 17 | Apr 15 | Nov 29 |
| 2019 | Apr 4 | Nov 2 | Apr 3 | Nov 9 |
| 2018 | May 1 | Oct 19 | Apr 11 | Nov 11 |
| 2017 | May 10 | Nov 1 | Apr 9 | Nov 11 |
| 2016 | Apr 15 | Nov 11 | Apr 11 | Nov 12 |
| 2015 | no data | Oct 19 | no data | Nov 23 |
| 2014 | Apr 17 | Nov 3 | Apr 17 | Nov 3 |
| 2013 | May 16 | Oct 25 | Apr 22 | Nov 9 |
| 2012 | Mar 28 | Nov 6 | Mar 12 | Dec 13 |
| 2011 | Mar 31 | Oct 30 | Mar 30 | Nov 18 |
| 2010 | Mar 28 | Nov 2 | Mar 8 | Nov 28 |
| 2009 | Apr 14 | Oct 19 | Mar 25 | Dec 6 |
| 2008 | Apr 16 | Oct 21 | Mar 30 | Nov 18 |
"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.