Cooper Dam, TX: frost dates by year

Last spring and first fall frost at NOAA station USC00411968, 2009 to 2024, measured from daily minimum temperatures.

Elevation 463 ft, 33.319, -95.604. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 11	Nov 13
Earliest	Feb 14 (2012)	Oct 28 (2017)
Latest	Apr 16 (2014)	Dec 3 (2009)
Trend	1.7 days later per decade	5.9 days earlier per decade
Years with data	12	13

At 28°F (hard freeze) the median last spring date is Feb 24 and the median first fall date is Nov 22.

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 20	Nov 21	Feb 20	Dec 5
2023	no data	Oct 30	no data	Dec 26
2022	no data	Nov 13	no data	Dec 18
2020	Feb 28	Dec 1	Feb 28	Dec 1
2019	Mar 7	Nov 1	Mar 7	Nov 12
2018	Apr 9	Nov 13	Feb 13	Nov 14
2017	Mar 15	Oct 28	Jan 9	Dec 8
2016	Feb 27	Nov 20	Feb 4	Nov 20
2015	Mar 8	Nov 22	Mar 7	Nov 22
2014	Apr 16	Nov 1	Mar 6	Nov 14
2013	Mar 27	Nov 13	Mar 26	Nov 13
2012	Feb 14	Nov 12	Feb 13	Nov 13
2011	Mar 6	no data	Feb 12	no data
2010	Mar 22	no data	Mar 4	no data
2009	no data	Dec 3	no data	Dec 4

"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.