Flatonia 4SE, TX: frost dates by year

Last spring and first fall frost at NOAA station USC00413183, 1951 to 2019, measured from daily minimum temperatures.

Elevation 470 ft, 29.634, -97.064. Download the data (JSON) · NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Feb 22	Dec 4
Earliest	Jan 9 (2017)	Oct 31 (1993)
Latest	Apr 3 (1975)	Dec 29 (1954)
Trend	4.5 days earlier per decade	little change (less than half a day per decade)
Years with data	65	62, 4 with no freeze

At 28°F (hard freeze) the median last spring date is Feb 12 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
2019	Mar 7	Nov 13	Mar 6	Nov 14
2018	Feb 13	Nov 14	Feb 13	Nov 14
2017	Jan 9	Dec 8	Jan 9	none
2016	Feb 5	Dec 18	none	Dec 18
2015	Feb 24	none	none	none
2014	Mar 4	no data	Mar 3	no data
2013	Jan 17	Nov 13	none	Dec 7
2012	Feb 12	Dec 11	none	Dec 11
2011	Feb 11	Dec 7	Feb 11	Dec 7
2009	Mar 1	no data	Jan 29	no data
2008	Jan 21	Dec 10	Jan 20	Dec 11
2007	Feb 17	no data	Feb 17	no data
2006	Feb 20	Dec 1	none	none
2005	Jan 24	Dec 8	none	Dec 8
2004	Feb 15	Dec 15	none	Dec 23
2003	Feb 26	no data	Feb 26	no data
2002	Mar 4	Dec 6	Mar 4	none
2001	Feb 10	Nov 29	Jan 20	none
2000	Jan 30	Dec 7	Jan 30	Dec 12
1999	Jan 15	Dec 6	Jan 4	none
1998	Mar 10	Dec 22	none	Dec 22
1997	Jan 30	Nov 16	Jan 29	Dec 13
1996	Mar 10	Dec 17	Mar 10	Dec 18
1995	Mar 8	Dec 9	Mar 8	Dec 10
1994	Feb 11	Dec 10	Feb 11	none
1993	Mar 14	Oct 31	none	Nov 26
1992	Jan 16	Nov 26	Jan 16	Nov 27
1991	Jan 31	Nov 4	none	none
1990	Jan 13	Dec 4	none	Dec 21
1989	Mar 8	Dec 13	Mar 7	Dec 13
1988	Feb 12	none	Feb 12	none
1987	Feb 18	Dec 15	none	none
1986	Feb 12	Nov 13	Feb 12	none
1985	Feb 12	Dec 2	Feb 3	Dec 2
1984	Feb 28	Nov 22	Feb 28	none
1983	Feb 7	Dec 7	none	Dec 19
1982	Feb 10	Dec 12	Feb 10	Dec 13
1981	Feb 12	Dec 18	Feb 12	Dec 18
1980	Mar 3	Dec 11	Mar 3	Dec 25
1979	Feb 19	Nov 29	Feb 18	Nov 30
1978	Mar 5	Dec 8	Mar 4	Dec 8
1977	Feb 27	Nov 10	Jan 29	none
1976	Mar 17	Nov 13	Mar 17	Nov 15
1975	Apr 3	Nov 13	Feb 23	Nov 13
1974	Mar 24	Nov 26	Feb 26	Nov 30
1973	no data	Nov 28	no data	Dec 20
1972	Feb 9	Nov 20	Feb 9	Dec 11
1971	no data	none	no data	none
1970	Mar 22	Nov 4	Feb 3	Nov 16
1969	Mar 10	Nov 15	Jan 25	Nov 20
1968	Mar 23	no data	Mar 1	no data
1967	Mar 8	Dec 3	Feb 7	Dec 23
1966	Mar 7	Dec 11	Mar 5	Dec 11
1965	Mar 26	none	Mar 20	none
1964	no data	Dec 4	no data	Dec 6
1963	Feb 22	Dec 12	Feb 13	Dec 15
1962	Mar 6	Dec 13	Mar 2	Dec 13
1961	Feb 8	Dec 13	Jan 29	Dec 13
1960	Mar 4	no data	Mar 3	no data
1959	Jan 23	Nov 6	Jan 22	Nov 7
1958	Mar 19	Nov 29	Feb 16	Dec 14
1957	Jan 23	Nov 30	Jan 17	Dec 12
1956	Mar 8	Dec 10	Feb 4	none
1955	Mar 28	Nov 28	Mar 26	Nov 29
1954	Mar 14	Dec 29	Jan 23	none
1953	Feb 22	Dec 23	Jan 17	Dec 23
1952	Mar 24	Nov 21	none	Dec 15
1951	Mar 13	Nov 3	Feb 16	Nov 3

"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.