Hamilton 3 S, AL: frost dates by year

Last spring and first fall frost at NOAA station USC00013645, 1962 to 2024, measured from daily minimum temperatures.

Elevation 435 ft, 34.097, -87.991. Download the data (JSON) · NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 14	Oct 20
Earliest	Mar 21 (2024)	Sep 29 (1967)
Latest	May 11 (2020)	Nov 21 (2024)
Trend	0.6 days earlier per decade	1.7 days later per decade
Years with data	60	61

At 28°F (hard freeze) the median last spring date is Apr 4 and the median first fall date is Oct 30.

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 21	Nov 21	Mar 20	Nov 30
2023	Mar 22	Nov 1	Mar 21	Nov 24
2022	no data	Oct 19	no data	Oct 19
2020	May 11	no data	Mar 8	no data
2019	Apr 4	Oct 23	Apr 2	Nov 1
2018	Apr 30	Oct 22	Apr 9	Nov 10
2017	Apr 9	Oct 25	Apr 9	Oct 30
2016	Mar 23	Oct 22	Mar 23	Nov 11
2015	Apr 6	Oct 17	Mar 29	Oct 19
2014	Apr 17	Oct 24	Apr 17	Nov 2
2013	Apr 26	Oct 21	Mar 29	Oct 25
2012	Apr 24	Oct 29	Mar 7	Oct 31
2011	Apr 18	Oct 3	Mar 13	Oct 21
2010	Mar 31	Oct 5	Mar 9	Oct 30
2009	Apr 9	Oct 18	Apr 9	Nov 26
2008	Apr 17	Oct 26	Apr 16	Oct 28
2007	Apr 17	Oct 30	Apr 17	Nov 7
2006	Apr 10	Oct 13	Mar 28	Oct 23
2005	Apr 26	Oct 24	Apr 4	Oct 26
2004	no data	Nov 6	no data	Nov 26
2003	Apr 12	Nov 14	Apr 1	Nov 14
2002	Apr 7	Nov 2	Apr 7	Nov 17
2001	Apr 26	Oct 7	Apr 19	Oct 27
2000	Apr 10	Oct 8	Apr 10	Oct 9
1999	Apr 19	Oct 21	Mar 29	Oct 24
1998	Apr 13	Oct 23	Mar 23	Nov 6
1997	Apr 19	Oct 19	Apr 19	Nov 16
1996	Apr 17	Oct 19	Apr 12	Nov 3
1995	Apr 3	Oct 21	Mar 12	Oct 25
1994	Apr 9	Oct 27	Apr 2	Nov 24
1993	Apr 24	Oct 11	Apr 23	Nov 1
1992	Apr 29	Nov 7	Apr 4	Nov 7
1991	Apr 2	Oct 7	Apr 1	Oct 7
1990	Apr 14	Oct 19	Apr 9	Oct 26
1989	Apr 14	Oct 20	Apr 12	Oct 20
1988	Apr 28	Oct 6	Mar 21	Nov 7
1987	Apr 8	Oct 4	Apr 6	Oct 13
1986	Apr 25	Oct 16	Apr 24	Nov 14
1985	Apr 11	Oct 6	Apr 11	Nov 6
1984	Apr 19	Oct 1	Apr 19	Oct 2
1983	Apr 27	Oct 14	Apr 21	Nov 6
1982	Apr 25	Oct 23	Apr 12	Oct 26
1981	Apr 7	Oct 3	Mar 26	Oct 20
1980	Apr 17	Oct 6	Mar 23	Oct 13
1979	Mar 27	Oct 14	Mar 27	Oct 24
1978	Apr 22	Oct 7	Mar 29	Oct 15
1977	Apr 6	Oct 13	Apr 6	Oct 17
1976	May 5	Oct 18	Mar 18	Oct 21
1975	Apr 14	Oct 20	Apr 5	Nov 14
1974	Apr 26	Oct 3	Mar 23	Nov 13
1973	Apr 13	Oct 30	Apr 12	Nov 10
1972	Apr 10	Oct 20	Apr 3	Nov 16
1971	May 5	Nov 4	Apr 9	Nov 8
1970	Apr 7	Oct 30	Apr 4	Nov 4
1969	Apr 1	Oct 29	Mar 29	Nov 4
1968	Apr 16	Oct 5	Apr 6	Oct 26
1967	Apr 28	Sep 29	Mar 22	Oct 28
1966	Apr 11	Oct 17	Apr 11	Nov 3
1965	Mar 23	Oct 25	Mar 23	Oct 25
1964	Apr 11	Oct 6	Apr 10	Oct 20
1963	Apr 15	Oct 29	Mar 24	Oct 30
1962	Apr 17	Oct 24	Apr 17	Oct 24

"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 1991–2020 frost probabilities.