Frost dates for 70445Lacombe, LA
The average last spring frost in Lacombe is March 3 and the average first fall frost is November 21, giving a typical growing season of about 263 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 3
- Average first fall frost
- Nov 21
- Growing season
- 263 days
Safer after Mar 26 (1-in-10 risk)
Possible by Nov 4 (1-in-10 risk)
First frost typically in 24 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Feb 25 · Mar 20 · Apr 10 | Oct 26 · Nov 8 · Nov 28 | 234 days | 100% |
| Frost / freeze (32°F) | Feb 4 · Mar 3 · Mar 26 | Nov 4 · Nov 21 · Dec 13 | 263 days | 100% |
| Hard freeze (28°F) | Jan 14 · Feb 14 · Mar 13 | Nov 14 · Dec 6 · Jan 12 | 300 days | 99% |
Planting calendar for Lacombe
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Jan 31 – Apr 8 |
| Tomatoes | Transplant outdoors | Mar 19 – Aug 1 |
| Peppers | Start seeds indoors | Jan 31 – Mar 3 |
| Peppers | Transplant outdoors | Apr 2 – May 3 |
| Eggplant | Start seeds indoors | Feb 17 – Mar 18 |
| Eggplant | Transplant outdoors | Apr 2 – May 3 |
| Cucumbers | Sow outdoors | Apr 2 – Aug 11 |
| Summer squash | Sow outdoors | Mar 19 – May 3 |
| Winter squash & pumpkins | Sow outdoors | Apr 2 – May 3 |
| Snap beans | Sow outdoors | Mar 19 – Sep 3 |
| Sweet corn | Sow outdoors | Mar 19 – Aug 1 |
| Watermelon & cantaloupe | Sow outdoors | Apr 2 – May 3 |
| Okra | Sow outdoors | Mar 26 – Apr 18 |
| Peas | Sow outdoors (spring) | Jan 31 – Mar 18 |
| Potatoes | Plant outdoors (spring) | Jan 31 – Apr 2 |
| Onions | Start seeds indoors (spring) | Dec 20 – Jan 16 |
| Onions | Transplant outdoors (spring) | Feb 17 – Mar 18 |
| Broccoli | Start seeds indoors (spring) | Jan 13 – Feb 16 |
| Broccoli | Transplant outdoors (spring) | Feb 17 – Mar 18 |
| Broccoli | Start seeds indoors (fall) | Jul 22 – Aug 1 |
| Broccoli | Transplant outdoors (fall) | Aug 21 – Sep 1 |
| Cabbage | Start seeds indoors (spring) | Jan 3 – Jan 31 |
| Cabbage | Transplant outdoors (spring) | Jan 31 – Mar 3 |
| Cabbage | Start seeds indoors (fall) | Jul 12 – Aug 11 |
| Cabbage | Transplant outdoors (fall) | Aug 11 – Sep 11 |
| Leaf lettuce | Sow outdoors (spring) | Jan 31 – Apr 18 |
| Leaf lettuce | Sow outdoors (fall) | Aug 11 – Sep 27 |
| Spinach | Sow outdoors (spring) | Jan 24 – Mar 9 |
| Spinach | Sow outdoors (fall) | Aug 28 – Oct 2 |
| Radishes | Sow outdoors (spring) | Jan 31 – Mar 23 |
| Radishes | Sow outdoors (fall) | Aug 11 – Oct 12 |
| Kale | Sow outdoors (spring) | Feb 17 – Mar 9 |
| Kale | Sow outdoors (fall) | Aug 4 – Sep 11 |
| Carrots | Sow outdoors (spring) | Mar 3 – Apr 18 |
| Carrots | Sow outdoors (fall) | Jul 12 – Aug 27 |
| Garlic | Plant outdoors (fall) | Nov 11 – Dec 12 |
Where these dates come from
ZIP code 70445 is matched to the NOAA station Slidell Ap, LA, 10.6 km away, at 27 ft elevation (10 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Slidell Ap, LA (used) | 27 ft | Mar 3 | Nov 21 |
| Slidell, LA | 10 ft | Feb 24 | Dec 1 |
| Covington 4 Nnw, LA | 40 ft | Mar 12 | Nov 18 |
| New Orleans Lakefront Ap, LA | 9 ft | Jan 22 | Jan 5 |
Frost dates near Lacombe
- Slidell, LA 70460 · last Feb 24, first Dec 1
- Mandeville, LA 70470 · last Mar 3, first Nov 21
- Pearl River, LA 70452 · last Mar 3, first Nov 21
- Abita Springs, LA 70420 · last Mar 12, first Nov 18
- Covington, LA 70434 · last Mar 12, first Nov 18
- Talisheek, LA 70464 · last Mar 12, first Nov 18
- Madisonville, LA 70447 · last Mar 12, first Nov 18
- New Orleans, LA 70129 · last Jan 22, first Jan 5
Frequently asked questions
- When is the last frost in Lacombe, LA?
- For ZIP code 70445, the average last spring frost (32°F) is March 3, based on NOAA 1991-2020 climate normals for the Slidell Ap, LA weather station. There is a 1-in-10 chance of a frost after March 26.
- When is the first frost in Lacombe, LA?
- The average first fall frost (32°F) is November 21. There is a 1-in-10 chance of frost by November 4, so tender plants are at risk from that point on.
- How long is the growing season in 70445?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 263 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.