Norfolk Nas, VA: frost dates by year

Last spring and first fall frost at NOAA station USW00013750, 1951 to 2024, measured from daily minimum temperatures.

Elevation 17 ft, 36.950, -76.283. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 16	Nov 29
Earliest	Feb 18 (1997)	Oct 14 (2011)
Latest	Apr 7 (1982)	Dec 31 (2012)
Trend	0.7 days earlier per decade	little change (less than half a day per decade)
Years with data	68	68, 1 with no freeze

At 28°F (hard freeze) the median last spring date is Feb 22 and the median first fall date is Dec 11.

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	Feb 22	Dec 4	Jan 22	Dec 7
2023	Mar 21	Nov 29	Feb 4	none
2021	Mar 8	Nov 29	Jan 29	none
2020	Mar 1	Dec 3	Feb 22	Dec 26
2019	Mar 13	Nov 13	Mar 7	Nov 14
2018	Mar 17	no data	Feb 9	no data
2017	Mar 17	Nov 24	Mar 15	Dec 13
2016	Apr 6	Nov 13	Feb 15	Dec 15
2015	Mar 29	Nov 24	Mar 7	none
2014	Mar 25	Nov 18	Mar 4	none
2013	Feb 21	Nov 13	Feb 2	Nov 25
2012	Feb 21	Dec 31	Feb 13	none
2011	Mar 29	Oct 14	Feb 11	none
2010	Feb 21	Dec 6	Feb 9	Dec 8
2009	Mar 5	Dec 12	Mar 4	none
2008	Feb 28	Nov 19	Feb 11	Dec 22
2007	Mar 19	Dec 6	Feb 19	none
2006	no data	Dec 5	no data	Dec 8
2005	Mar 10	Nov 19	Feb 26	Nov 26
2003	Mar 11	Dec 4	Feb 9	none
2002	Mar 23	Nov 28	Mar 5	Dec 3
2001	Mar 27	Dec 23	Mar 6	none
1998	Mar 13	Dec 23	Mar 12	Dec 27
1997	Feb 18	Nov 19	Feb 12	Dec 7
1996	Mar 11	Nov 28	Mar 10	Dec 20
1995	Mar 11	Nov 23	Feb 14	Dec 10
1994	Mar 17	none	Feb 28	none
1993	Mar 19	Dec 11	Mar 18	Dec 12
1992	Mar 17	Nov 16	Feb 10	Dec 25
1991	Feb 27	Nov 27	Feb 17	Dec 19
1990	Mar 8	Nov 30	Feb 27	none
1989	Mar 20	Nov 23	Feb 25	Dec 3
1988	Mar 22	Dec 10	Feb 22	Dec 11
1987	Mar 11	Nov 21	Mar 6	Dec 30
1986	Mar 23	Nov 13	Mar 23	Dec 14
1985	Mar 7	Dec 3	Feb 21	Dec 15
1984	no data	Nov 30	no data	Dec 7
1983	Feb 21	no data	Feb 12	no data
1982	Apr 7	Dec 12	Mar 29	Dec 13
1981	Mar 20	Nov 22	Feb 13	Dec 14
1980	Mar 4	Nov 21	Mar 4	Dec 17
1979	Mar 16	Nov 30	Feb 20	Dec 18
1978	Mar 18	Dec 10	Mar 7	none
1977	Feb 22	Nov 26	Feb 22	Nov 26
1976	Mar 18	Nov 9	Mar 18	Nov 25
1975	Mar 10	Dec 18	Mar 9	Dec 18
1974	Apr 7	Nov 17	Mar 25	Nov 27
1973	Mar 1	Dec 3	Feb 19	Dec 11
1972	Feb 23	Nov 25	Feb 9	Dec 16
1971	Mar 25	Dec 19	Feb 17	none
1970	Mar 17	Nov 23	Feb 27	Nov 24
1969	Mar 16	Nov 15	Mar 12	Dec 21
1968	Mar 15	Dec 8	Mar 14	Dec 9
1967	Mar 20	Nov 8	Mar 2	Nov 16
1966	Mar 17	Dec 1	Feb 21	Dec 4
1965	Mar 21	Dec 2	Feb 27	Dec 8
1964	Apr 2	Nov 22	Feb 23	Dec 1
1963	Mar 3	Nov 25	Feb 28	Dec 15
1962	Mar 19	Nov 7	Mar 3	Dec 10
1961	Mar 11	Dec 15	Feb 6	Dec 26
1960	Mar 27	Dec 3	Mar 15	Dec 3
1959	Mar 19	Nov 18	Mar 19	Dec 23
1958	Feb 23	Nov 30	Feb 19	Dec 1
1957	Feb 20	Dec 5	Jan 24	Dec 11
1956	Mar 25	Nov 24	Feb 22	none
1955	Mar 28	Nov 29	Mar 27	Nov 29
1954	Mar 16	Dec 6	Feb 13	Dec 6
1953	Mar 9	Dec 17	none	Dec 17
1952	Mar 15	Nov 29	Jan 31	Dec 28
1951	Mar 26	Nov 19	Feb 10	Nov 19

"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.