Frost history / Leland Bowman Lock, LA
Leland Bowman Lock, LA: frost dates by year
Last spring and first fall frost at NOAA station USC00165296, 1985 to 2025, measured from daily minimum temperatures.
Elevation 40 ft, 29.786, -92.205. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Feb 13 | Dec 14 |
| Earliest | Jan 1 (1991) | Nov 2 (1993) |
| Latest | Mar 14 (1993) | Dec 29 (2012) |
| Trend | 2.2 days later per decade | 0.8 days earlier per decade |
| Years with data | 35, 5 with no freeze | 37, 9 with no freeze |
At 28°F (hard freeze) the median last spring date is Jan 21 and the median first fall date is Dec 15.
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 21 | Dec 15 | Feb 21 | none |
| 2023 | none | none | none | none |
| 2022 | no data | Dec 22 | no data | Dec 23 |
| 2021 | Feb 21 | none | Feb 21 | none |
| 2020 | Feb 28 | Dec 15 | none | none |
| 2019 | Mar 8 | Nov 13 | none | Nov 13 |
| 2018 | Jan 20 | Nov 15 | Jan 19 | none |
| 2017 | Jan 9 | Dec 7 | Jan 9 | Dec 15 |
| 2016 | none | Dec 9 | none | none |
| 2015 | Mar 7 | none | Jan 9 | none |
| 2014 | Mar 5 | Nov 14 | Feb 8 | none |
| 2013 | Mar 2 | Nov 28 | none | Nov 28 |
| 2012 | Feb 13 | Dec 29 | Jan 13 | Dec 31 |
| 2011 | Feb 12 | Dec 8 | Feb 12 | none |
| 2010 | Jan 31 | Dec 13 | Jan 13 | Dec 14 |
| 2009 | Feb 5 | none | none | none |
| 2008 | Jan 21 | no data | Jan 21 | no data |
| 2007 | Feb 17 | Dec 17 | none | none |
| 2006 | none | Dec 5 | none | none |
| 2005 | Jan 25 | no data | Jan 24 | no data |
| 2004 | Feb 16 | Dec 15 | Jan 21 | Dec 15 |
| 2003 | no data | none | no data | none |
| 2001 | Jan 22 | Dec 27 | Jan 5 | none |
| 2000 | Feb 7 | Dec 19 | none | Dec 31 |
| 1999 | Feb 23 | none | Jan 6 | none |
| 1998 | none | none | none | none |
| 1997 | Jan 19 | Dec 15 | Jan 17 | none |
| 1996 | Mar 12 | Dec 19 | Mar 12 | Dec 19 |
| 1995 | no data | Dec 10 | no data | Dec 10 |
| 1994 | Feb 2 | none | Jan 20 | none |
| 1993 | Mar 14 | Nov 2 | none | Nov 28 |
| 1992 | Jan 21 | Nov 29 | none | none |
| 1991 | Jan 1 | Nov 4 | none | Nov 9 |
| 1990 | none | Dec 24 | none | Dec 24 |
| 1989 | Mar 8 | Dec 13 | Mar 8 | Dec 13 |
| 1988 | Feb 13 | Dec 18 | Feb 12 | none |
| 1987 | Jan 24 | Dec 17 | Jan 11 | none |
| 1986 | Mar 1 | none | Feb 13 | none |
| 1985 | no data | Dec 14 | no data | Dec 26 |
"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.