Frost history / Harlingen Rio Grande Ap, TX
Harlingen Rio Grande Ap, TX: frost dates by year
Last spring and first fall frost at NOAA station USW00012904, 1952 to 2024, measured from daily minimum temperatures.
Elevation 34 ft, 26.228, -97.654. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jan 24 | Dec 19 |
| Earliest | Jan 3 (2002) | Nov 14 (2018) |
| Latest | Feb 27 (2020) | Dec 28 (1997) |
| Trend | 0.8 days later per decade | 1.5 days earlier per decade |
| Years with data | 37, 21 with no freeze | 38, 27 with no freeze |
At 28°F (hard freeze) the median last spring date is Jan 17 and the median first fall date is Dec 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 |
|---|---|---|---|---|
| 2024 | Jan 17 | none | Jan 17 | none |
| 2023 | Feb 11 | none | none | none |
| 2022 | Feb 5 | Dec 23 | none | Dec 23 |
| 2021 | Feb 20 | none | Feb 16 | none |
| 2020 | Feb 27 | Dec 25 | none | none |
| 2019 | none | none | none | none |
| 2018 | Jan 17 | Nov 14 | none | none |
| 2017 | Jan 8 | none | none | none |
| 2016 | none | none | none | none |
| 2015 | none | none | none | none |
| 2014 | none | none | none | none |
| 2013 | none | none | none | none |
| 2012 | none | none | none | none |
| 2011 | Feb 11 | Dec 7 | Feb 3 | none |
| 2010 | Jan 10 | none | Jan 10 | none |
| 2009 | none | Dec 4 | none | none |
| 2008 | none | Dec 11 | none | none |
| 2007 | none | none | none | none |
| 2006 | Feb 12 | none | none | none |
| 2005 | none | none | none | none |
| 2004 | none | Dec 24 | none | none |
| 2003 | none | none | none | none |
| 2002 | Jan 3 | none | Jan 3 | none |
| 2001 | Jan 20 | none | none | none |
| 2000 | none | Dec 19 | none | none |
| 1999 | none | none | none | none |
| 1998 | none | Dec 26 | none | none |
| 1997 | Jan 14 | Dec 28 | none | none |
| 1961 | Jan 28 | none | none | none |
| 1960 | Feb 25 | none | none | none |
| 1959 | Jan 5 | none | none | none |
| 1958 | none | Dec 16 | none | none |
| 1957 | none | none | none | none |
| 1956 | none | none | none | none |
| 1955 | none | none | none | none |
| 1954 | none | none | none | none |
| 1953 | none | none | none | none |
| 1952 | no data | none | no data | none |
"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.