Boerne, TX: frost dates by year

Last spring and first fall frost at NOAA station USC00410902, 1951 to 2025, measured from daily minimum temperatures.

Elevation 1,445 ft, 29.799, -98.735. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 21	Nov 11
Earliest	Feb 13 (2018)	Oct 8 (1952)
Latest	Apr 17 (1999)	Dec 14 (1998)
Trend	2.4 days earlier per decade	2.0 days later per decade
Years with data	73	73

At 28°F (hard freeze) the median last spring date is Mar 7 and the median first fall date is Nov 23.

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
2025	Feb 23	Dec 9	Feb 22	none
2024	Feb 19	Dec 11	Jan 21	none
2023	Feb 19	Nov 1	Feb 19	Dec 11
2022	Mar 14	Nov 13	Mar 14	Dec 18
2021	Mar 4	Dec 12	Feb 21	Dec 12
2020	Feb 28	Dec 1	Feb 28	Dec 1
2019	Apr 3	Oct 31	Mar 7	Nov 1
2018	Feb 13	Nov 13	Feb 13	Nov 14
2017	Feb 17	Oct 29	Jan 9	Nov 24
2016	Mar 22	Nov 20	Feb 8	Nov 20
2015	Mar 7	Nov 22	Mar 7	Nov 23
2014	Mar 13	Nov 13	Mar 4	Nov 17
2013	Mar 27	Nov 14	Mar 27	Nov 14
2012	Mar 5	Nov 28	Feb 13	Dec 11
2011	Apr 5	Nov 4	Mar 6	Nov 4
2010	Mar 23	Nov 5	Feb 17	Nov 19
2009	Apr 8	Nov 18	Apr 8	Dec 5
2008	Mar 21	Oct 28	Mar 9	Nov 16
2006	Mar 26	Nov 21	Mar 25	Dec 1
2005	Apr 3	Oct 25	Jan 24	Nov 17
2004	Feb 28	Dec 1	Feb 28	Dec 1
2003	Apr 10	Nov 24	Mar 31	Nov 24
2002	Mar 23	Nov 17	Mar 5	Dec 6
2001	Mar 20	Nov 29	Feb 19	Nov 29
2000	Mar 13	Nov 14	Mar 12	Dec 7
1999	Apr 17	Nov 3	Mar 16	Nov 26
1998	Mar 12	Dec 14	Mar 12	Dec 16
1997	Feb 17	Nov 16	Jan 31	Nov 16
1996	Apr 7	Oct 23	Mar 22	Nov 26
1995	Mar 10	Nov 12	Mar 10	Nov 12
1994	Mar 12	Dec 1	Mar 10	Dec 11
1993	Mar 15	Oct 31	Mar 15	Oct 31
1992	Feb 27	Nov 5	Jan 25	Nov 5
1991	Mar 10	Nov 2	Feb 2	Nov 4
1990	Mar 21	Nov 5	Feb 6	Nov 30
1989	Mar 23	Oct 20	Mar 10	Nov 3
1988	Apr 13	Nov 17	Mar 20	Nov 22
1987	Apr 4	Nov 11	Apr 4	Nov 11
1986	Mar 23	no data	Mar 2	no data
1985	no data	Dec 2	no data	Dec 2
1984	Mar 8	Nov 11	Mar 7	Nov 22
1983	Apr 9	Nov 16	Feb 13	Nov 28
1982	Mar 8	Nov 4	Mar 7	Dec 13
1981	Feb 25	Nov 21	Feb 13	Dec 18
1980	Apr 14	Oct 30	Mar 19	Oct 30
1979	Mar 7	Nov 11	Feb 27	Nov 14
1978	Mar 17	Dec 4	Mar 6	Dec 9
1977	Mar 8	Nov 10	Feb 27	Nov 10
1976	Mar 17	Oct 20	Mar 17	Nov 15
1975	Apr 4	Nov 13	Apr 4	Nov 14
1974	Apr 6	Nov 15	Feb 27	Nov 26
1973	Apr 11	Nov 29	Feb 16	Nov 29
1972	Mar 4	Nov 15	Feb 13	Nov 26
1971	Apr 8	Dec 4	Apr 8	Dec 4
1970	Apr 6	Oct 29	Mar 15	Nov 5
1969	Mar 26	Nov 3	Mar 13	Nov 15
1968	Mar 23	Nov 5	Mar 23	Nov 12
1967	Mar 8	Nov 4	Mar 7	Nov 4
1966	Mar 25	Oct 20	Mar 6	Nov 28
1965	Mar 26	Nov 30	Mar 21	Nov 30
1964	Mar 21	Nov 21	Feb 23	Nov 22
1963	Mar 6	Nov 24	Mar 6	Nov 24
1962	Apr 2	Nov 9	Mar 16	Dec 6
1961	Apr 16	Nov 4	Apr 16	Dec 13
1960	Mar 16	Nov 11	Mar 3	Nov 11
1959	Mar 22	Nov 6	Mar 6	Nov 6
1958	Mar 26	Nov 19	Mar 15	Nov 29
1957	Mar 8	Oct 27	Mar 8	Oct 28
1956	Apr 11	Nov 9	Mar 17	Nov 27
1955	Mar 28	Oct 25	Mar 28	Nov 28
1954	Mar 15	Nov 5	Mar 15	Nov 5
1953	Mar 5	Nov 9	Feb 22	Nov 10
1952	Mar 24	Oct 8	Mar 24	Oct 8
1951	Apr 12	Nov 3	Apr 12	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 to 2020 frost probabilities.