Frost history / Richwood 1SSE, WV
Richwood 1SSE, WV: frost dates by year
Last spring and first fall frost at NOAA station USC00467513, 1986 to 2011, measured from daily minimum temperatures.
Elevation 3,090 ft, 38.206, -80.521. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 2 | Oct 11 |
| Earliest | Apr 10 (1987) | Sep 16 (2011) |
| Latest | May 26 (1988) | Oct 31 (2002) |
| Trend | little change (less than half a day per decade) | 4.4 days later per decade |
| Years with data | 26 | 24 |
At 28°F (hard freeze) the median last spring date is Apr 16 and the median first fall date is Oct 26.
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 |
|---|---|---|---|---|
| 2011 | Apr 18 | Sep 16 | Apr 4 | Oct 30 |
| 2010 | May 10 | Oct 22 | Apr 28 | Nov 1 |
| 2009 | May 18 | Oct 17 | Apr 13 | Oct 19 |
| 2008 | Apr 30 | Oct 19 | Apr 16 | Oct 19 |
| 2007 | Apr 17 | Oct 29 | Apr 17 | Oct 29 |
| 2006 | May 24 | Oct 13 | Apr 10 | Oct 13 |
| 2005 | May 5 | Oct 25 | May 4 | Oct 28 |
| 2004 | May 5 | no data | May 5 | no data |
| 2003 | Apr 25 | Oct 3 | Apr 1 | Oct 3 |
| 2002 | May 23 | Oct 31 | May 23 | Nov 2 |
| 2001 | Apr 20 | Oct 7 | Apr 19 | Oct 7 |
| 2000 | Apr 27 | Oct 8 | Apr 13 | Oct 8 |
| 1999 | Apr 25 | Oct 24 | Mar 28 | Oct 25 |
| 1998 | Apr 28 | Oct 22 | Apr 12 | Nov 5 |
| 1997 | May 22 | Oct 2 | Apr 19 | Oct 23 |
| 1996 | May 15 | Oct 4 | Apr 18 | Nov 3 |
| 1995 | Apr 27 | Oct 16 | Apr 16 | Nov 4 |
| 1994 | May 13 | Oct 11 | Apr 9 | Nov 11 |
| 1993 | May 21 | Oct 11 | Apr 23 | Oct 31 |
| 1992 | Apr 30 | no data | Apr 14 | no data |
| 1991 | Apr 23 | Sep 28 | Apr 12 | Oct 9 |
| 1990 | Apr 19 | Oct 20 | Apr 19 | Oct 27 |
| 1989 | May 9 | Sep 24 | May 8 | Oct 10 |
| 1988 | May 26 | Oct 6 | Apr 21 | Oct 6 |
| 1987 | Apr 10 | Oct 4 | Apr 7 | Oct 4 |
| 1986 | May 5 | Oct 7 | May 4 | Nov 10 |
"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.