Frost history / Rupert 4 N, WV
Rupert 4 N, WV: frost dates by year
Last spring and first fall frost at NOAA station USC00465875, 1997 to 2024, measured from daily minimum temperatures.
Elevation 3,319 ft, 38.018, -80.683. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 1 | Oct 11 |
| Earliest | Apr 17 (2019) | Sep 4 (1997) |
| Latest | May 26 (2013) | Oct 29 (2007) |
| Trend | 0.9 days later per decade | 4.0 days later per decade |
| Years with data | 11 | 12 |
At 28°F (hard freeze) the median last spring date is Apr 23 and the median first fall date is Oct 21.
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 23 | Sep 8 | Apr 23 | Oct 11 |
| 2023 | no data | Oct 8 | no data | Oct 8 |
| 2019 | Apr 17 | no data | Apr 17 | no data |
| 2018 | May 1 | Oct 14 | Apr 30 | Oct 19 |
| 2017 | May 9 | Oct 17 | May 8 | Oct 30 |
| 2016 | May 17 | Oct 23 | Apr 13 | Nov 12 |
| 2015 | Apr 29 | Oct 18 | Apr 28 | Oct 18 |
| 2014 | May 18 | Oct 5 | Apr 18 | Oct 31 |
| 2013 | May 26 | Oct 21 | Apr 25 | Oct 24 |
| 2012 | Apr 25 | no data | Apr 25 | no data |
| 2011 | May 5 | Oct 1 | Apr 7 | Oct 30 |
| 2007 | no data | Oct 29 | no data | Oct 29 |
| 1999 | Apr 20 | no data | Apr 15 | no data |
| 1998 | no data | Oct 2 | no data | Oct 2 |
| 1997 | no data | Sep 4 | no data | Oct 2 |
"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.