Frost history / Marrero 9 Ssw, LA
Marrero 9 Ssw, LA: frost dates by year
Last spring and first fall frost at NOAA station USC00165926, 1992 to 2019, measured from daily minimum temperatures.
Elevation 3 ft, 29.785, -90.116. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Feb 8 | Dec 15 |
| Earliest | Jan 9 (2017) | Nov 1 (1993) |
| Latest | Mar 16 (1993) | Dec 28 (1994) |
| Trend | 5.7 days earlier per decade | 5.0 days earlier per decade |
| Years with data | 14 | 16, 4 with no freeze |
At 28°F (hard freeze) the median last spring date is Jan 20 and the median first fall date is Dec 19.
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 |
|---|---|---|---|---|
| 2019 | Mar 7 | Nov 13 | none | Nov 13 |
| 2018 | Jan 20 | Nov 16 | Jan 20 | none |
| 2017 | Jan 9 | Dec 14 | Jan 9 | none |
| 2016 | no data | none | no data | none |
| 2015 | no data | none | no data | none |
| 2008 | Jan 25 | no data | Jan 4 | no data |
| 2004 | no data | Dec 15 | no data | Dec 20 |
| 2003 | no data | Dec 21 | no data | none |
| 2002 | Mar 6 | none | Mar 5 | none |
| 2001 | Jan 26 | Dec 26 | Jan 5 | none |
| 2000 | Feb 7 | no data | none | no data |
| 1999 | Feb 15 | Dec 16 | Feb 15 | none |
| 1998 | Mar 11 | none | none | none |
| 1997 | Feb 12 | Dec 15 | Jan 19 | none |
| 1996 | no data | Dec 19 | no data | Dec 19 |
| 1995 | Feb 9 | no data | none | no data |
| 1994 | Feb 3 | Dec 28 | Jan 20 | none |
| 1993 | Mar 16 | Nov 1 | Mar 14 | none |
| 1992 | Jan 22 | Nov 29 | Jan 21 | 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.