Harrisville, WV: frost dates by year

Last spring and first fall frost at NOAA station USC00463940, 2006 to 2019, measured from daily minimum temperatures.

Elevation 823 ft, 39.219, -81.049. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 1	Oct 19
Earliest	Apr 11 (2007)	Oct 11 (2012)
Latest	May 19 (2009)	Oct 29 (2007)
Trend	2.8 days later per decade	2.7 days later per decade
Years with data	13	14

At 28°F (hard freeze) the median last spring date is Apr 13 and the median first fall date is Oct 27.

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
2019	Apr 16	Oct 20	Apr 3	Nov 2
2018	May 1	Oct 18	Apr 21	Oct 22
2017	May 9	Oct 27	Apr 8	Nov 11
2016	May 17	Oct 25	Apr 13	Nov 12
2015	Apr 27	Oct 18	Apr 24	Oct 18
2014	Apr 18	Oct 27	Apr 17	Nov 3
2013	May 14	Oct 21	Apr 21	Oct 25
2012	Apr 24	Oct 11	Apr 13	Oct 14
2011	May 5	Oct 23	Apr 6	Nov 5
2010	May 11	Oct 16	Apr 10	Oct 30
2009	May 19	Oct 18	Apr 13	Oct 19
2008	Apr 18	Oct 19	Apr 16	Oct 19
2007	Apr 11	Oct 29	Apr 11	Oct 29
2006	no data	Oct 13	no data	Oct 13

"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.