Frost history / Port O'Connor, TX
Port O'Connor, TX: frost dates by year
Last spring and first fall frost at NOAA station USC00417186, 1951 to 2011, measured from daily minimum temperatures.
Elevation 5 ft, 28.434, -96.428. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Feb 10 | Dec 16 |
| Earliest | Jan 6 (1969) | Nov 15 (1969) |
| Latest | Mar 27 (1955) | Dec 29 (1954) |
| Trend | little change (less than half a day per decade) | little change (less than half a day per decade) |
| Years with data | 37, 4 with no freeze | 39, 18 with no freeze |
At 28°F (hard freeze) the median last spring date is Jan 22 and the median first fall date is Dec 22.
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 |
|---|---|---|---|---|
| 2011 | Feb 15 | none | Feb 15 | none |
| 2010 | no data | none | no data | none |
| 2009 | Feb 1 | Dec 25 | none | none |
| 2008 | no data | none | no data | none |
| 2006 | none | none | none | none |
| 2005 | no data | none | no data | none |
| 2001 | no data | Dec 3 | no data | none |
| 2000 | no data | Dec 12 | no data | none |
| 1996 | Feb 4 | no data | none | no data |
| 1995 | none | none | none | none |
| 1989 | Mar 6 | no data | Mar 6 | no data |
| 1984 | Jan 21 | none | Jan 20 | none |
| 1983 | none | Dec 19 | none | Dec 22 |
| 1982 | Feb 7 | none | Feb 7 | none |
| 1981 | Feb 12 | none | Feb 12 | none |
| 1980 | Mar 3 | Dec 25 | Mar 3 | none |
| 1979 | Feb 10 | Dec 18 | Jan 15 | none |
| 1978 | Mar 4 | Dec 9 | Jan 21 | none |
| 1977 | Jan 29 | Dec 22 | Jan 11 | none |
| 1976 | no data | Nov 29 | no data | none |
| 1975 | Feb 25 | none | Feb 7 | none |
| 1974 | Feb 9 | none | none | none |
| 1973 | Feb 11 | Dec 20 | Jan 13 | Dec 21 |
| 1972 | Feb 4 | no data | Jan 17 | no data |
| 1971 | Mar 4 | none | Feb 9 | none |
| 1970 | Feb 4 | none | Jan 8 | none |
| 1969 | Jan 6 | Nov 15 | Jan 5 | none |
| 1968 | Feb 24 | Dec 4 | Feb 24 | none |
| 1967 | no data | none | no data | none |
| 1966 | Feb 3 | no data | Jan 31 | no data |
| 1965 | Mar 20 | no data | none | no data |
| 1964 | Feb 22 | Dec 18 | Jan 14 | Dec 18 |
| 1963 | no data | Dec 23 | no data | Dec 23 |
| 1962 | Mar 2 | Dec 12 | Jan 13 | none |
| 1961 | Feb 7 | no data | none | no data |
| 1960 | Feb 26 | none | Feb 26 | none |
| 1959 | Jan 23 | Nov 28 | Jan 5 | none |
| 1958 | Feb 13 | Dec 14 | none | none |
| 1957 | Jan 19 | none | Jan 19 | none |
| 1956 | Feb 4 | Nov 27 | none | none |
| 1955 | Mar 27 | none | none | none |
| 1954 | Feb 8 | Dec 29 | Jan 23 | none |
| 1953 | Jan 18 | Dec 23 | none | Dec 23 |
| 1952 | none | none | none | none |
| 1951 | Feb 16 | Dec 16 | Feb 14 | 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 1991–2020 frost probabilities.