Frost history / Harlingen, TX
Harlingen, TX: frost dates by year
Last spring and first fall frost at NOAA station USC00413943, 1951 to 2025, measured from daily minimum temperatures.
Elevation 38 ft, 26.203, -97.673. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Feb 6 | Dec 16 |
| Earliest | Jan 6 (1959) | Nov 20 (1969) |
| Latest | Mar 6 (1966) | Dec 26 (1953) |
| Trend | little change (less than half a day per decade) | 1.3 days later per decade |
| Years with data | 63, 29 with no freeze | 63, 46 with no freeze |
At 28°F (hard freeze) the median last spring date is Jan 25 and the median first fall date is Dec 24.
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 | Feb 22 | none | Jan 23 | none |
| 2023 | none | none | none | none |
| 2022 | Feb 5 | Dec 23 | none | Dec 23 |
| 2021 | Feb 17 | none | Feb 15 | none |
| 2020 | none | none | none | none |
| 2018 | no data | none | no data | none |
| 2017 | Jan 8 | no data | none | no data |
| 2016 | none | none | none | none |
| 2015 | none | none | none | none |
| 2014 | Jan 30 | none | none | none |
| 2013 | none | none | none | none |
| 2012 | none | none | none | none |
| 2011 | Feb 12 | none | Feb 5 | none |
| 2010 | Jan 10 | none | Jan 10 | none |
| 2009 | none | Dec 5 | none | none |
| 2008 | none | none | none | none |
| 2007 | none | none | none | none |
| 2006 | none | none | none | none |
| 2005 | none | none | none | none |
| 2004 | none | Dec 25 | none | Dec 25 |
| 2003 | none | none | none | none |
| 2002 | none | none | none | none |
| 2001 | none | none | none | none |
| 2000 | none | none | none | none |
| 1999 | none | none | none | none |
| 1998 | none | none | none | none |
| 1997 | Jan 17 | none | none | none |
| 1996 | Feb 5 | Dec 19 | none | Dec 19 |
| 1995 | none | none | none | none |
| 1993 | none | no data | none | no data |
| 1992 | no data | none | no data | none |
| 1990 | none | no data | none | no data |
| 1989 | Feb 8 | no data | Feb 8 | no data |
| 1988 | none | none | none | none |
| 1987 | none | no data | none | no data |
| 1986 | none | none | none | none |
| 1985 | Feb 3 | Dec 14 | Feb 3 | none |
| 1984 | Jan 21 | none | none | none |
| 1983 | no data | Dec 22 | no data | Dec 24 |
| 1982 | Feb 7 | none | Jan 15 | none |
| 1981 | Feb 11 | none | none | none |
| 1980 | Mar 4 | none | none | none |
| 1979 | Jan 15 | none | Jan 4 | none |
| 1978 | Feb 23 | Dec 10 | none | none |
| 1977 | Jan 20 | Dec 22 | none | none |
| 1976 | Jan 10 | Nov 29 | Jan 9 | none |
| 1975 | no data | none | no data | none |
| 1974 | Feb 27 | none | none | none |
| 1973 | Feb 12 | no data | Feb 11 | no data |
| 1972 | no data | none | no data | none |
| 1970 | Jan 8 | no data | Jan 8 | no data |
| 1969 | Jan 6 | Nov 20 | none | none |
| 1968 | Feb 25 | none | none | none |
| 1967 | Feb 10 | none | none | none |
| 1966 | Mar 6 | Dec 12 | none | Dec 13 |
| 1965 | Feb 26 | none | none | none |
| 1964 | no data | Dec 18 | no data | none |
| 1963 | Feb 13 | Dec 23 | Jan 25 | Dec 24 |
| 1962 | Jan 13 | none | Jan 13 | none |
| 1961 | none | none | none | none |
| 1960 | Feb 26 | none | none | none |
| 1959 | Jan 6 | Nov 29 | none | none |
| 1958 | none | Dec 16 | none | none |
| 1957 | Jan 18 | Dec 1 | none | Dec 12 |
| 1956 | no data | none | no data | none |
| 1955 | Feb 12 | none | Feb 12 | none |
| 1954 | none | none | none | none |
| 1953 | none | Dec 26 | none | Dec 26 |
| 1952 | none | none | none | none |
| 1951 | Feb 4 | none | Feb 4 | 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.