Frost dates for 08403Longport, NJ
The average last spring frost in Longport is March 26 and the average first fall frost is November 21, giving a typical growing season of about 240 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 26
- Average first fall frost
- Nov 21
- Growing season
- 240 days
Safer after Apr 6 (1-in-10 risk)
Possible by Nov 6 (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 23 · Apr 4 · Apr 18 | Oct 30 · Nov 10 · Nov 26 | 217 days | 100% |
| Frost / freeze (32°F) | Mar 10 · Mar 26 · Apr 6 | Nov 6 · Nov 21 · Dec 7 | 240 days | 100% |
| Hard freeze (28°F) | Feb 27 · Mar 15 · Mar 30 | Nov 16 · Dec 2 · Dec 22 | 263 days | 100% |
Planting calendar for Longport
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 23 – May 1 |
| Tomatoes | Transplant outdoors | Apr 11 – Aug 1 |
| Peppers | Start seeds indoors | Feb 23 – Mar 26 |
| Peppers | Transplant outdoors | Apr 25 – May 26 |
| Eggplant | Start seeds indoors | Mar 12 – Apr 10 |
| Eggplant | Transplant outdoors | Apr 25 – May 26 |
| Cucumbers | Sow outdoors | Apr 25 – Aug 11 |
| Summer squash | Sow outdoors | Apr 11 – May 26 |
| Winter squash & pumpkins | Sow outdoors | Apr 25 – May 26 |
| Snap beans | Sow outdoors | Apr 11 – Sep 3 |
| Sweet corn | Sow outdoors | Apr 11 – Aug 1 |
| Watermelon & cantaloupe | Sow outdoors | Apr 25 – May 26 |
| Okra | Sow outdoors | Apr 18 – May 11 |
| Peas | Sow outdoors (spring) | Feb 23 – Apr 10 |
| Potatoes | Plant outdoors (spring) | Feb 23 – Apr 25 |
| Onions | Start seeds indoors (spring) | Jan 12 – Feb 8 |
| Onions | Transplant outdoors (spring) | Mar 12 – Apr 10 |
| Broccoli | Start seeds indoors (spring) | Feb 5 – Mar 11 |
| Broccoli | Transplant outdoors (spring) | Mar 12 – Apr 10 |
| Broccoli | Start seeds indoors (fall) | Jul 22 – Aug 1 |
| Broccoli | Transplant outdoors (fall) | Aug 21 – Sep 1 |
| Cabbage | Start seeds indoors (spring) | Jan 26 – Feb 23 |
| Cabbage | Transplant outdoors (spring) | Feb 23 – Mar 26 |
| Cabbage | Start seeds indoors (fall) | Jul 12 – Aug 11 |
| Cabbage | Transplant outdoors (fall) | Aug 11 – Sep 11 |
| Leaf lettuce | Sow outdoors (spring) | Feb 23 – May 11 |
| Leaf lettuce | Sow outdoors (fall) | Aug 11 – Sep 27 |
| Spinach | Sow outdoors (spring) | Feb 16 – Apr 1 |
| Spinach | Sow outdoors (fall) | Aug 28 – Oct 2 |
| Radishes | Sow outdoors (spring) | Feb 23 – Apr 15 |
| Radishes | Sow outdoors (fall) | Aug 11 – Oct 12 |
| Kale | Sow outdoors (spring) | Mar 12 – Apr 1 |
| Kale | Sow outdoors (fall) | Aug 4 – Sep 11 |
| Carrots | Sow outdoors (spring) | Mar 26 – May 11 |
| Carrots | Sow outdoors (fall) | Jul 12 – Aug 27 |
| Garlic | Plant outdoors (fall) | Nov 11 – Dec 12 |
Where these dates come from
ZIP code 08403 is matched to the NOAA station Atlantic City, NJ, 11.7 km away, at 10 ft elevation (7 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Atlantic City, NJ (used) | 10 ft | Mar 26 | Nov 21 |
| Margate, NJ | 16 ft | Mar 26 | Nov 22 |
| Atlantic City Intl Ap, NJ | 60 ft | Apr 18 | Oct 29 |
| Estell Manor, NJ | 85 ft | Apr 24 | Oct 22 |
Frost dates near Longport
- Margate City, NJ 08402 · last Mar 26, first Nov 21
- Linwood, NJ 08221 · last Apr 18, first Oct 29
- Somers Point, NJ 08244 · last Apr 18, first Oct 29
- Northfield, NJ 08225 · last Apr 18, first Oct 29
- Ventnor City, NJ 08406 · last Mar 26, first Nov 21
- Ocean City, NJ 08226 · last Mar 26, first Nov 21
- Pleasantville, NJ 08232 · last Mar 26, first Nov 21
- Egg Harbor Township, NJ 08234 · last Apr 18, first Oct 29
Frequently asked questions
- When is the last frost in Longport, NJ?
- For ZIP code 08403, the average last spring frost (32°F) is March 26, based on NOAA 1991-2020 climate normals for the Atlantic City, NJ weather station. There is a 1-in-10 chance of a frost after April 6.
- When is the first frost in Longport, NJ?
- The average first fall frost (32°F) is November 21. There is a 1-in-10 chance of frost by November 6, so tender plants are at risk from that point on.
- How long is the growing season in 08403?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 240 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.