Bonita 7NW, TX: frost dates by year

Last spring and first fall frost at NOAA station USC00410926, 2004 to 2020, measured from daily minimum temperatures.

Elevation 980 ft, 33.819, -97.734. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 22	Nov 8
Earliest	Feb 13 (2012)	Oct 12 (2019)
Latest	May 3 (2013)	Nov 25 (2004)
Trend	14.2 days later per decade	7.7 days earlier per decade
Years with data	15	16

At 28°F (hard freeze) the median last spring date is Mar 14 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
2020	Apr 18	no data	Apr 15	no data
2019	Apr 1	Oct 12	Mar 6	Oct 31
2018	Apr 15	Nov 10	Apr 8	Nov 10
2017	Mar 15	Oct 28	Mar 14	Oct 28
2016	Mar 20	Nov 19	Mar 20	Dec 7
2015	Mar 7	Nov 22	Mar 7	Nov 22
2014	Apr 15	Nov 1	Mar 17	Nov 12
2013	May 3	Nov 22	Mar 27	Nov 27
2012	Feb 13	Oct 27	Feb 13	Nov 24
2011	Mar 16	Nov 4	Mar 6	Nov 4
2010	Mar 22	Nov 5	Mar 22	Nov 26
2009	no data	Nov 18	no data	Dec 3
2008	Apr 14	Nov 16	Mar 9	Nov 21
2007	no data	Nov 22	no data	Dec 3
2006	Mar 25	Nov 2	Mar 24	Nov 30
2005	Mar 17	Oct 24	Feb 10	Nov 16
2004	Feb 26	Nov 25	Feb 26	Dec 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.