Frost dates for 70403Hammond, LA
The average last spring frost in Hammond is March 8 and the average first fall frost is November 19, giving a typical growing season of about 257 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 8
- Average first fall frost
- Nov 19
- Growing season
- 257 days
Safer after Mar 31 (1-in-10 risk)
Possible by Nov 3 (1-in-10 risk)
First frost typically in 18 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) | Mar 1 · Mar 25 · Apr 16 | Oct 23 · Nov 6 · Nov 26 | 230 days | 100% |
| Frost / freeze (32°F) | Feb 12 · Mar 8 · Mar 31 | Nov 3 · Nov 19 · Dec 8 | 257 days | 100% |
| Hard freeze (28°F) | Jan 20 · Feb 21 · Mar 17 | Nov 14 · Dec 2 · Jan 3 | 288 days | 100% |
Planting calendar for Hammond
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 | Feb 5 – Apr 13 |
| Tomatoes | Transplant outdoors | Mar 24 – Jul 30 |
| Peppers | Start seeds indoors | Feb 5 – Mar 8 |
| Peppers | Transplant outdoors | Apr 7 – May 8 |
| Eggplant | Start seeds indoors | Feb 22 – Mar 23 |
| Eggplant | Transplant outdoors | Apr 7 – May 8 |
| Cucumbers | Sow outdoors | Apr 7 – Aug 9 |
| Summer squash | Sow outdoors | Mar 24 – May 8 |
| Winter squash & pumpkins | Sow outdoors | Apr 7 – May 8 |
| Snap beans | Sow outdoors | Mar 24 – Sep 1 |
| Sweet corn | Sow outdoors | Mar 24 – Jul 30 |
| Watermelon & cantaloupe | Sow outdoors | Apr 7 – May 8 |
| Okra | Sow outdoors | Mar 31 – Apr 23 |
| Peas | Sow outdoors (spring) | Feb 5 – Mar 23 |
| Potatoes | Plant outdoors (spring) | Feb 5 – Apr 7 |
| Onions | Start seeds indoors (spring) | Dec 25 – Jan 21 |
| Onions | Transplant outdoors (spring) | Feb 22 – Mar 23 |
| Broccoli | Start seeds indoors (spring) | Jan 18 – Feb 21 |
| Broccoli | Transplant outdoors (spring) | Feb 22 – Mar 23 |
| Broccoli | Start seeds indoors (fall) | Jul 20 – Jul 30 |
| Broccoli | Transplant outdoors (fall) | Aug 19 – Aug 30 |
| Cabbage | Start seeds indoors (spring) | Jan 8 – Feb 5 |
| Cabbage | Transplant outdoors (spring) | Feb 5 – Mar 8 |
| Cabbage | Start seeds indoors (fall) | Jul 10 – Aug 9 |
| Cabbage | Transplant outdoors (fall) | Aug 9 – Sep 9 |
| Leaf lettuce | Sow outdoors (spring) | Feb 5 – Apr 23 |
| Leaf lettuce | Sow outdoors (fall) | Aug 9 – Sep 25 |
| Spinach | Sow outdoors (spring) | Jan 29 – Mar 14 |
| Spinach | Sow outdoors (fall) | Aug 26 – Sep 30 |
| Radishes | Sow outdoors (spring) | Feb 5 – Mar 28 |
| Radishes | Sow outdoors (fall) | Aug 9 – Oct 10 |
| Kale | Sow outdoors (spring) | Feb 22 – Mar 14 |
| Kale | Sow outdoors (fall) | Aug 2 – Sep 9 |
| Carrots | Sow outdoors (spring) | Mar 8 – Apr 23 |
| Carrots | Sow outdoors (fall) | Jul 10 – Aug 25 |
| Garlic | Plant outdoors (fall) | Nov 9 – Dec 10 |
Where these dates come from
ZIP code 70403 is matched to the NOAA station Hammond 5 E, LA, 9 km away, at 35 ft elevation (15 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Hammond 5 E, LA (used) | 35 ft | Mar 8 | Nov 19 |
| Amite, LA | 170 ft | Mar 7 | Nov 18 |
| Covington 4 Nnw, LA | 40 ft | Mar 12 | Nov 18 |
| Reserve, LA | 15 ft | Feb 9 | Dec 14 |
Frost dates near Hammond
- Hammond, LA 70404 · last Mar 8, first Nov 19
- Ponchatoula, LA 70454 · last Mar 8, first Nov 19
- Natalbany, LA 70451 · last Mar 8, first Nov 19
- Tickfaw, LA 70466 · last Mar 8, first Nov 19
- Albany, LA 70711 · last Mar 8, first Nov 19
- Robert, LA 70455 · last Mar 8, first Nov 19
- Springfield, LA 70462 · last Mar 8, first Nov 19
- Loranger, LA 70446 · last Mar 8, first Nov 19
Frequently asked questions
- When is the last frost in Hammond, LA?
- For ZIP code 70403, the average last spring frost (32°F) is March 8, based on NOAA 1991-2020 climate normals for the Hammond 5 E, LA weather station. There is a 1-in-10 chance of a frost after March 31.
- When is the first frost in Hammond, LA?
- The average first fall frost (32°F) is November 19. There is a 1-in-10 chance of frost by November 3, so tender plants are at risk from that point on.
- How long is the growing season in 70403?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 257 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.