Frost history / San Augustine, TX
San Augustine, TX: frost dates by year
Last spring and first fall frost at NOAA station USC00417951, 2001 to 2025, measured from daily minimum temperatures.
Elevation 295 ft, 31.519, -94.119. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Mar 11 | Nov 13 |
| Earliest | Feb 4 (2005) | Oct 18 (2017) |
| Latest | Apr 17 (2018) | Dec 19 (2015) |
| Trend | 10.3 days later per decade | 6.4 days earlier per decade |
| Years with data | 16 | 19 |
At 28°F (hard freeze) the median last spring date is Mar 1 and the median first fall date is Nov 25.
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 | Mar 22 | Nov 10 | Mar 22 | Nov 10 |
| 2024 | Mar 21 | Nov 21 | Feb 19 | Nov 30 |
| 2023 | Mar 21 | Nov 1 | Mar 20 | Nov 2 |
| 2022 | Mar 14 | Oct 19 | Mar 14 | Nov 13 |
| 2021 | Mar 8 | Nov 13 | Feb 21 | none |
| 2020 | Feb 28 | Dec 1 | Feb 28 | Dec 1 |
| 2019 | Apr 2 | Nov 1 | Mar 6 | Nov 13 |
| 2018 | Apr 17 | Nov 11 | Apr 17 | Nov 11 |
| 2017 | no data | Oct 18 | no data | Oct 18 |
| 2015 | no data | Dec 19 | no data | none |
| 2013 | Mar 27 | Nov 13 | Mar 3 | Nov 14 |
| 2012 | Mar 4 | Nov 13 | Feb 12 | Dec 11 |
| 2011 | no data | Nov 11 | no data | Nov 29 |
| 2007 | Mar 6 | Nov 16 | Mar 6 | Dec 4 |
| 2006 | Mar 25 | Nov 17 | Feb 20 | Nov 21 |
| 2005 | Feb 4 | no data | Jan 24 | no data |
| 2004 | Feb 26 | Dec 1 | Feb 7 | Dec 15 |
| 2003 | Feb 25 | Nov 24 | Feb 16 | Nov 25 |
| 2002 | Mar 6 | Nov 16 | Mar 6 | Nov 28 |
| 2001 | no data | Nov 21 | no data | Dec 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.