Hampton Bays, NY planting zone & frost dates
Hampton Bays is in USDA hardiness zone 7a. The last spring frost usually comes around May 7 and the first fall frost around October 14, for a growing season of about 160 days.
Planting calendar for Hampton Bays
Dates are counted from the average last spring frost (May 7) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.
| Crop | When |
|---|---|
| Tomatoes | Start seeds indoors: Mar 12 – Mar 26 Transplant outdoors: May 14 – May 21 |
| Peppers | Start seeds indoors: Feb 26 – Mar 12 Transplant outdoors: May 21 – May 28 |
| Eggplant | Start seeds indoors: Feb 26 – Mar 12 Transplant outdoors: May 21 – May 28 |
| Broccoli | Start seeds indoors: Feb 26 – Mar 12 Transplant outdoors: Apr 9 – Apr 23 |
| Cabbage | Start seeds indoors: Feb 26 – Mar 12 Transplant outdoors: Apr 9 – Apr 23 |
| Onions (sets) | Plant outdoors: Apr 9 – Apr 23 |
| Peas | Sow outdoors: Mar 26 – Apr 9 |
| Spinach | Sow outdoors: Mar 26 – Apr 9 |
| Lettuce | Sow outdoors: Apr 9 – Apr 23 |
| Carrots | Sow outdoors: Apr 9 – Apr 23 |
| Potatoes | Plant outdoors: Apr 9 – Apr 23 |
| Beans | Sow outdoors: May 14 – May 21 |
| Sweet corn | Sow outdoors: May 14 – May 21 |
| Cucumbers | Sow outdoors: May 14 – May 21 |
| Squash & zucchini | Sow outdoors: May 14 – May 21 |
| Basil | Start seeds indoors: Mar 26 – Apr 9 Transplant outdoors: May 14 – May 21 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Aug 19 (8 weeks before the average first fall frost on Oct 14).
Useful for zone 7a gardens
- Seed starting kit with dome — to start seeds indoors before the last frost
- LED grow light for seedlings — stops leggy seedlings
- Frost cloth / plant covers — for late spring and early fall frosts
- Soil thermometer — warm-season crops need soil above 60°F
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Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Apr 23 | May 7 | May 23 |
| First 32°F frost in fall is before | Oct 31 | Oct 14 | Oct 2 |
How to read it: in spring there is a 10% chance of a frost after May 23, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 2. A hard freeze (28°F) usually ends around April 27.
Hardiness zone by ZIP code in Hampton Bays
- 11946 zone 7a
Nearby cities
- Riverhead zone 7a, last frost Apr 6
- Manorville zone 7a, last frost Apr 21
- Mastic zone 7a, last frost Apr 18
- Mastic Beach zone 7a, last frost Apr 18
- Shirley zone 7a, last frost Apr 18
- Ridge zone 7a, last frost Apr 21
- Rocky Point zone 7b, last frost Apr 4
- Middle Island zone 7a, last frost Apr 21
Questions
What growing zone is Hampton Bays, NY?
Hampton Bays is in USDA Plant Hardiness Zone 7a (average extreme winter low 0°F to 5°F), according to the USDA 2023 map.
When is the last frost in Hampton Bays?
The average last spring frost (32°F) in Hampton Bays is May 7. There is still a 10% chance of frost until May 23.
When can I plant tomatoes in Hampton Bays?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around May 14 – May 21. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Westhamptn Gabreski Ap, NY (USW00014719), 10.0 km (6.2 mi) from the city center, elevation 20 m, based on 21 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.