Durham 11 W, NC: frost dates by year

Last spring and first fall frost at NOAA station USW00003758, 2007 to 2024, measured from daily minimum temperatures.

Elevation 562 ft, 35.971, -79.093. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 6	Nov 4
Earliest	Mar 11 (2012)	Oct 18 (2015)
Latest	May 10 (2020)	Nov 22 (2024)
Trend	4.9 days later per decade	4.8 days later per decade
Years with data	16	18

At 28°F (hard freeze) the median last spring date is Mar 15 and the median first fall date is Nov 17.

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	Mar 25	Nov 22	Feb 20	Nov 30
2023	Mar 21	Nov 2	Mar 21	Nov 2
2022	Apr 20	Oct 19	Mar 28	Nov 17
2021	no data	Nov 14	no data	Nov 14
2020	May 10	Nov 18	Mar 8	Nov 19
2019	Apr 3	Nov 4	Mar 6	Nov 9
2018	Apr 8	Oct 22	Mar 24	Nov 11
2017	Apr 8	Nov 11	Mar 17	Nov 11
2016	Apr 10	Nov 12	Apr 6	Nov 12
2015	Apr 5	Oct 18	Mar 29	Nov 24
2014	Apr 17	Nov 3	Mar 27	Nov 14
2013	Apr 2	Oct 26	Mar 29	Nov 13
2012	Mar 11	Nov 8	Mar 6	Nov 23
2011	Apr 6	Oct 29	Mar 12	Nov 18
2010	Mar 27	Nov 7	Mar 7	Nov 28
2009	Mar 22	Nov 7	Mar 5	Dec 1
2008	Apr 16	Oct 29	Mar 10	Nov 19
2007	no data	Oct 30	no data	Nov 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.