Petersburg, WV: frost dates by year

Last spring and first fall frost at NOAA station USC00466952, 1995 to 2022, measured from daily minimum temperatures.

Elevation 960 ft, 38.999, -79.135. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 2	Oct 17
Earliest	Apr 8 (2012)	Oct 2 (1998)
Latest	May 22 (2002)	Oct 29 (2007)
Trend	8.7 days earlier per decade	8.9 days later per decade
Years with data	14	14

At 28°F (hard freeze) the median last spring date is Apr 12 and the median first fall date is Oct 25.

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
2022	Apr 30	no data	Apr 30	no data
2016	Apr 16	Oct 26	Apr 14	Nov 12
2015	Apr 13	no data	Apr 2	no data
2014	no data	Oct 27	no data	Nov 3
2013	no data	Oct 21	no data	Oct 26
2012	Apr 8	no data	Mar 28	no data
2011	no data	Oct 23	no data	Oct 30
2007	May 7	Oct 29	Apr 11	Nov 8
2006	May 2	Oct 13	Apr 11	Oct 13
2005	May 6	Oct 27	Apr 18	Oct 27
2003	no data	Oct 3	no data	Oct 3
2002	May 22	no data	May 22	no data
2001	May 14	Oct 7	Apr 19	Oct 8
2000	Apr 9	no data	Apr 2	no data
1999	May 3	Oct 15	Apr 1	Oct 25
1998	Apr 28	Oct 2	Mar 26	Oct 23
1997	May 14	Oct 16	Apr 16	Oct 21
1996	May 15	Oct 4	May 14	Nov 4
1995	no data	Oct 17	no data	Oct 17

"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.