Robertsdale, AL: frost dates by year

Last spring and first fall frost at NOAA station USC00016988, 1951 to 2019, measured from daily minimum temperatures.

Elevation 161 ft, 30.565, -87.702. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 6	Nov 19
Earliest	Feb 7 (2001)	Oct 21 (1989)
Latest	Apr 1 (1987)	Dec 19 (1996)
Trend	little change (less than half a day per decade)	1.9 days later per decade
Years with data	63	60, 1 with no freeze

At 28°F (hard freeze) the median last spring date is Feb 19 and the median first fall date is Dec 2.

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	Mar 8	Nov 13	none	Nov 13
2018	Mar 16	Nov 16	Jan 20	none
2017	Mar 17	Dec 9	Jan 9	none
2016	Feb 14	Dec 10	Feb 11	none
2015	Mar 7	Nov 23	Mar 7	none
2014	Mar 1	Nov 14	Feb 1	Nov 19
2013	Mar 28	Nov 28	Feb 18	Nov 28
2012	Feb 14	Nov 25	Feb 13	Dec 22
2011	Feb 14	Nov 11	Feb 14	Dec 1
2010	Mar 7	Nov 27	Mar 5	Dec 7
2009	Mar 4	no data	Feb 21	no data
2008	Mar 26	Nov 19	Feb 28	Nov 19
2007	Mar 6	Nov 16	Feb 20	Dec 17
2006	Feb 28	Dec 5	Feb 14	Dec 5
2005	Mar 2	Nov 18	Jan 25	Dec 22
2004	no data	Dec 14	no data	Dec 15
2002	Mar 7	no data	Mar 6	no data
2001	Feb 7	no data	Jan 27	no data
1999	Mar 5	Nov 4	Jan 11	Dec 26
1997	Feb 12	Nov 17	Feb 12	Nov 17
1996	Mar 12	Dec 19	Mar 11	Dec 19
1995	Mar 10	no data	Feb 12	no data
1994	Feb 26	Dec 1	Feb 15	Dec 12
1993	Mar 16	Oct 31	Mar 16	Nov 1
1992	Feb 11	Nov 29	Feb 10	Nov 30
1991	Mar 12	Nov 4	Feb 17	Nov 4
1990	Mar 21	Dec 9	Jan 14	Dec 25
1989	Feb 26	Oct 21	Feb 26	Dec 4
1988	Mar 18	Nov 29	Mar 15	Dec 18
1987	Apr 1	Nov 12	Feb 11	Dec 17
1986	Mar 23	Dec 6	Mar 2	none
1985	Feb 17	Dec 3	Feb 17	Dec 15
1984	Mar 2	Nov 23	Mar 2	Dec 7
1983	Mar 25	Dec 8	Jan 18	Dec 24
1982	Mar 9	no data	Jan 27	no data
1981	Feb 13	Nov 21	Feb 13	Nov 21
1980	Mar 4	Dec 12	Mar 4	Dec 28
1979	Feb 12	Nov 30	Feb 11	Nov 30
1978	Mar 6	Dec 10	Mar 6	Dec 10
1977	Feb 22	Nov 11	Feb 17	Dec 7
1976	Feb 23	Nov 6	Feb 9	Nov 23
1975	Feb 9	Nov 15	Feb 8	Dec 19
1974	Feb 28	no data	Feb 27	no data
1973	Feb 18	Dec 8	Feb 17	Dec 8
1972	Feb 20	Dec 1	Feb 5	Dec 17
1971	Mar 21	none	Mar 4	none
1970	Mar 14	Nov 17	Feb 27	Nov 17
1969	Mar 27	Nov 5	Mar 27	Nov 15
1968	Mar 25	Oct 29	Mar 24	Nov 13
1967	Feb 27	Nov 7	Feb 26	Nov 7
1966	Mar 7	Nov 3	Mar 7	Nov 3
1965	Mar 22	Nov 30	Feb 26	Nov 30
1964	Feb 28	Nov 22	Feb 24	Dec 1
1963	Feb 28	Nov 3	Feb 27	Nov 14
1962	Mar 8	Dec 7	Mar 6	Dec 7
1961	no data	Nov 10	no data	Dec 24
1960	no data	Dec 2	no data	Dec 2
1959	Feb 22	Nov 7	Feb 22	Nov 7
1958	Feb 21	Nov 29	Feb 21	Dec 16
1957	Mar 27	Oct 28	Mar 27	Dec 1
1956	Mar 21	Nov 10	Feb 21	Nov 23
1955	Mar 29	Nov 4	Mar 27	Nov 29
1954	Mar 16	Oct 31	Mar 4	Nov 3
1953	Feb 22	Dec 15	Feb 18	Dec 18
1952	Feb 8	Oct 30	Jan 30	Nov 22
1951	Mar 14	Nov 3	Feb 9	Nov 8

"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.