Last spring frost
Mar 2
Frost Dates for St. Francisville, LA
First fall frost
Nov 24
Growing season
268 days
Hardiness zone
9a
In an average year around St. Francisville, LA, the last spring frost (32°F) is about Mar 2 and the first fall frost is about Nov 24, giving roughly a 268-day growing season. To be safe most years, wait until Jan 31 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Apr 13 | Mar 24 | Feb 25 |
| Freeze (32°F) | Mar 29 | Mar 2 | Jan 31 |
| Hard (28°F) | Mar 14 | Feb 7 | Jan 16 |
| Severe (24°F) | Feb 28 | Jan 26 | Dec 30 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 13 | Apr 7 | Apr 3 | Mar 29 | Mar 24 | Mar 18 | Mar 12 | Mar 4 | Feb 25 |
| 32°F | Mar 29 | Mar 19 | Mar 14 | Mar 8 | Mar 2 | Feb 26 | Feb 18 | Feb 8 | Jan 31 |
| 28°F | Mar 14 | Mar 5 | Feb 26 | Feb 16 | Feb 7 | Feb 2 | Jan 29 | Jan 24 | Jan 16 |
| 24°F | Feb 28 | Feb 11 | Feb 1 | Jan 29 | Jan 26 | Jan 21 | Jan 16 | Jan 10 | Dec 30 |
| 20°F | Feb 4 | Jan 31 | Jan 26 | Jan 22 | Jan 18 | Jan 13 | Jan 9 | Jan 3 | Dec 27 |
| 16°F | Jan 31 | Jan 26 | Jan 23 | Jan 20 | Jan 18 | Jan 15 | Jan 11 | Jan 8 | Jan 3 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Oct 30 | Nov 12 | Dec 1 |
| Freeze (32°F) | Nov 5 | Nov 24 | Dec 16 |
| Hard (28°F) | Nov 16 | Dec 10 | Jan 7 |
| Severe (24°F) | Dec 1 | Jan 1 | Jan 23 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 30 | Nov 2 | Nov 5 | Nov 8 | Nov 12 | Nov 15 | Nov 19 | Nov 24 | Dec 1 |
| 32°F | Nov 5 | Nov 11 | Nov 16 | Nov 20 | Nov 24 | Nov 28 | Dec 2 | Dec 6 | Dec 16 |
| 28°F | Nov 16 | Nov 24 | Nov 30 | Dec 4 | Dec 10 | Dec 16 | Dec 24 | Jan 1 | Jan 7 |
| 24°F | Dec 1 | Dec 11 | Dec 20 | Dec 26 | Jan 1 | Jan 3 | Jan 8 | Jan 14 | Jan 23 |
| 20°F | Dec 17 | Dec 27 | Jan 1 | Jan 2 | Jan 6 | Jan 9 | Jan 14 | Jan 18 | Jan 27 |
| 16°F | Jan 1 | Jan 3 | Jan 7 | Jan 9 | Jan 12 | Jan 16 | Jan 18 | Jan 21 | Jan 29 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: St Francisville 1 Ne, La, about 12.8 miles away@if(!empty($station['elevation_ft'])), at 129 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in St. Francisville, LA?
On average, the last spring frost (32°F) around St. Francisville, LA is about Mar 2. In cooler years it can run later, so for a safer bet many gardeners wait until Jan 31.
When is the first frost in the fall?
The first fall frost around St. Francisville, LA typically arrives about Nov 24. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Mar 2 on average, or Jan 31 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 268 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 70787 Planting calendar → Louisiana frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026