Merkel 12 Sw, TX: frost dates by year

Last spring and first fall frost at NOAA station USC00415852, 2003 to 2021, measured from daily minimum temperatures.

Elevation 2,249 ft, 32.320, -100.122. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 14	Oct 23
Earliest	Mar 25 (2006)	Oct 12 (2019)
Latest	Apr 24 (2017)	Nov 24 (2003)
Trend	6.5 days later per decade	8.9 days earlier per decade
Years with data	11	13

At 28°F (hard freeze) the median last spring date is Mar 19 and the median first fall date is Nov 9.

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
2021	Apr 21	no data	Mar 18	no data
2020	Apr 15	Oct 23	Feb 27	Oct 26
2019	Apr 1	Oct 12	Mar 19	Oct 30
2018	Apr 16	Oct 16	Apr 16	Nov 9
2017	Apr 24	no data	Feb 26	no data
2016	no data	Nov 19	no data	Nov 19
2011	no data	Oct 20	no data	Nov 4
2010	Apr 8	Oct 28	Apr 8	Nov 5
2009	no data	Oct 22	no data	Nov 18
2008	Apr 18	Oct 23	Mar 9	Nov 7
2007	Apr 14	Oct 23	Apr 14	Nov 23
2006	Mar 25	Oct 23	Mar 24	Nov 2
2005	Mar 27	Oct 24	Feb 11	Nov 16
2004	Apr 14	Nov 12	Apr 12	Nov 12
2003	no data	Nov 24	no data	Nov 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 to 2020 frost probabilities.