Frost history / Austin San Antonio, TX
Austin San Antonio, TX: frost dates by year
Last spring and first fall frost at NOAA station USW00012971, 1997 to 2024, measured from daily minimum temperatures.
Elevation 633 ft, 29.704, -98.028. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Feb 27 | Nov 24 |
| Earliest | Jan 8 (2017) | Nov 1 (2019) |
| Latest | Mar 24 (2006) | Dec 18 (2022) |
| Trend | 0.6 days later per decade | 5.2 days later per decade |
| Years with data | 28 | 27, 1 with no freeze |
At 28°F (hard freeze) the median last spring date is Feb 11 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 |
|---|---|---|---|---|
| 2024 | Feb 19 | Dec 12 | Jan 20 | none |
| 2023 | Feb 18 | Dec 11 | Feb 11 | none |
| 2022 | Mar 13 | Dec 18 | Mar 13 | Dec 22 |
| 2021 | Feb 20 | none | Feb 20 | none |
| 2020 | Feb 27 | Nov 30 | Feb 27 | none |
| 2019 | Mar 6 | Nov 1 | Mar 5 | Dec 19 |
| 2018 | Feb 12 | Nov 13 | Jan 25 | Nov 14 |
| 2017 | Jan 8 | Dec 7 | Jan 8 | none |
| 2016 | Feb 7 | Nov 20 | Feb 5 | Dec 19 |
| 2015 | Mar 6 | Nov 23 | Jan 8 | none |
| 2014 | Mar 4 | Nov 17 | Mar 3 | Dec 25 |
| 2013 | Mar 6 | Nov 13 | Jan 31 | Dec 7 |
| 2012 | Feb 12 | Dec 11 | Jan 14 | Dec 11 |
| 2011 | Mar 6 | Nov 4 | Feb 12 | Nov 28 |
| 2010 | Mar 22 | Nov 19 | Feb 25 | Nov 27 |
| 2009 | Mar 2 | Dec 4 | Jan 31 | Dec 4 |
| 2008 | Mar 8 | Nov 16 | Mar 8 | Dec 11 |
| 2007 | Mar 5 | Nov 26 | Feb 16 | Dec 16 |
| 2006 | Mar 24 | Dec 1 | Feb 19 | Dec 1 |
| 2005 | Jan 24 | Nov 17 | Jan 17 | Dec 6 |
| 2004 | Feb 27 | Dec 1 | Feb 15 | Dec 15 |
| 2003 | Feb 26 | Nov 24 | Feb 25 | Nov 24 |
| 2002 | Mar 5 | Dec 6 | Mar 5 | none |
| 2001 | Feb 18 | Nov 28 | Jan 20 | Dec 27 |
| 2000 | Feb 6 | Nov 14 | Jan 30 | Dec 12 |
| 1999 | Mar 15 | Nov 3 | Jan 15 | Dec 5 |
| 1998 | Jan 24 | no data | none | no data |
| 1997 | Feb 15 | Nov 16 | Jan 30 | Dec 12 |
"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.