Fall in zone 7bPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 11743 (Lloyd Harbor, NY)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Centerport, NY (3 miles away).
- Average last spring frostApr 950% chance of a 32°F freeze after this date
- Average first fall frostNov 1050% chance of a 32°F freeze by this date
- Growing season (frost-free)215 daysmedian, 32°F threshold
- USDA hardiness zone7b5 to 10°F avg. coldest night
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This week in your yard
As of Oct 18, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
No soil station with a fresh reading within 62 miles.
4-inch depth
No soil station with a fresh reading within 62 miles.
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
The latest National Weather Service 7-day forecast and any Frost Advisory or Freeze Warning for 11743 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
No soil reading near this ZIP. Typical extension timing for your region: spring mid-April to early May.
Fertilizer window
Lawn region: North (cool-season). Timing only; always follow the product label.
- Kentucky bluegrass (cool-season): Early fall: Around Labor Day (late August–September); Late fall: Late October–November, before the ground freezes; Late spring: Optional around Memorial Day. Avoid: Early-spring and midsummer feeding (pushes top growth, favors crabgrass).
Plant now
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 10: skip heavy pruning in the 6–8 weeks before it, because new growth may not harden off in time.
Spring-flowering shrubs are pruned right after their flowers fade, not by date. See the pruning guide.
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Mar 30 |
| 50% (the "average" last frost) | Apr 9 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 23 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Oct 30 |
| 50% (the "average" first frost) | Nov 10 |
| 90% (late: most years have frozen by now) | Nov 26 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 22 | Oct 31 |
| 32°F (freeze) | Apr 9 | Nov 10 |
| 28°F (hard freeze) | Mar 30 | Nov 21 |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
Vegetable planting calendar for 11743
Dates count from your average last spring frost (Apr 9) and first fall frost (Nov 10). Half of years have a frost after the spring date, so give tender crops (tomatoes, peppers, squash) some slack.
| Crop | Start indoors | Spring planting | Fall planting |
|---|---|---|---|
| Tomato | Feb 12–26 | Apr 16–30 (transplant) | Jul 14–Aug 11 (transplant) |
| Pepper (sweet and hot) | Jan 29–Feb 12 | Apr 23–May 7 (transplant) | Jul 21–Aug 11 (transplant) |
| Eggplant | Jan 29–Feb 12 | Apr 23–May 7 (transplant) | Jul 21–Aug 11 (transplant) |
| Tomatillo | Feb 12–26 | Apr 16–30 (transplant) | – |
| Lettuce | Feb 12–26 | Mar 19–Apr 9 (transplant) Mar 12–Apr 23 (sow outdoors) | Sep 15–Oct 6 (transplant) Sep 1–29 (sowing) |
| Spinach | – | Feb 26–Mar 19 (sow outdoors) | Sep 15–Oct 6 (sowing) |
| Kale | Feb 12–26 | Mar 12–26 (transplant) Mar 12–26 (sow outdoors) | Aug 18–Sep 15 (transplant) Aug 4–Sep 1 (sowing) |
| Collards | Feb 12–26 | Mar 12–Apr 9 (transplant) Mar 12–Apr 9 (sow outdoors) | Aug 18–Sep 15 (transplant) Aug 4–Sep 1 (sowing) |
| Broccoli | Jan 29–Feb 12 | Mar 12–26 (transplant) | Aug 4–Sep 1 (transplant) |
| Cabbage | Jan 29–Feb 12 | Mar 12–26 (transplant) | Aug 4–Sep 1 (transplant) |
| Cauliflower | Jan 29–Feb 12 | Mar 26–Apr 9 (transplant) | Aug 4–Sep 1 (transplant) |
| Brussels sprouts | Jan 15–29 | Mar 12–26 (transplant) | Jul 21–Aug 11 (transplant) |
| Kohlrabi | Feb 12–26 | Mar 12–26 (transplant) Mar 12–26 (sow outdoors) | Sep 1–15 (sowing) |
| Bok choy / Asian greens | – | Mar 12–26 (sow outdoors) | Sep 15–29 (sowing) |
| Arugula | – | Mar 12–Apr 9 (sow outdoors) | Sep 15–Oct 13 (sowing) |
| Mustard greens | – | Mar 12–Apr 2 (sow outdoors) | Sep 15–29 (sowing) |
| Swiss chard | Feb 26–Mar 12 | Mar 26–Apr 16 (transplant) Mar 26–Apr 23 (sow outdoors) | Sep 1–15 (sowing) |
| Beet | – | Mar 12–Apr 9 (sow outdoors) | Sep 1–15 (sowing) |
| Carrot | – | Mar 19–Apr 16 (sow outdoors) | Aug 18–Sep 1 (sowing) |
| Radish | – | Mar 5–Apr 16 (sow outdoors) | Sep 29–Oct 13 (sowing) |
| Turnip | – | Mar 12–Apr 2 (sow outdoors) | Sep 1–15 (sowing) |
| Parsnip | – | Mar 19–Apr 9 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 12–Mar 12 (sow outdoors) | Aug 18–Sep 1 (sowing) |
| Onion (bulbing) | Jan 15–29 | Feb 26–Mar 12 (transplant) | – |
| Green onion / scallion | – | Feb 26–Mar 26 (sow outdoors) | Sep 1–15 (sowing) |
| Leek | Jan 15–29 | Mar 12–26 (transplant) | – |
| Garlic | – | – | Sep 29–Oct 27 (sowing) |
| Shallot | – | Feb 26–Mar 12 (transplant) | Sep 29–Oct 27 (sowing) |
| Potato | – | Mar 12–26 (transplant) | Jul 21–Aug 4 (transplant) |
| Sweet potato | – | Apr 30–May 14 (transplant) | – |
| Sweet corn | – | Apr 16–30 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 16–30 (sow outdoors) | Aug 18–Sep 1 (sowing) |
| Bean, pole | – | Apr 16–30 (sow outdoors) | – |
| Lima bean | – | Apr 23–May 7 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 30–May 21 (sow outdoors) | – |
| Cucumber | Mar 12–19 | Apr 16–30 (transplant) Apr 16–30 (sow outdoors) | Aug 18–Sep 1 (sowing) |
| Summer squash / zucchini | Mar 12–19 | Apr 16–30 (transplant) Apr 16–30 (sow outdoors) | Aug 18–Sep 1 (sowing) |
| Winter squash | Mar 12–19 | Apr 16–30 (transplant) Apr 16–30 (sow outdoors) | – |
| Pumpkin | – | Apr 16–30 (sow outdoors) | – |
| Watermelon | Mar 12–19 | Apr 23–May 7 (transplant) Apr 23–May 7 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 12–19 | Apr 23–May 7 (transplant) Apr 23–May 7 (sow outdoors) | – |
| Okra | Feb 26–Mar 12 | Apr 23–May 7 (transplant) Apr 23–May 7 (sow outdoors) | – |
| Celery | Jan 15–29 | Apr 16–23 (transplant) | – |
| Basil | Feb 26–Mar 12 | Apr 16–30 (transplant) Apr 16–30 (sow outdoors) | – |
| Cilantro | – | Mar 26–Apr 23 (sow outdoors) | Sep 15–29 (sowing) |
| Parsley | Jan 29–Feb 12 | Mar 26–Apr 9 (transplant) Mar 19–Apr 9 (sow outdoors) | – |
| Dill | – | Apr 9–23 (sow outdoors) | Sep 15–29 (sowing) |
| Sunflower | – | Apr 9–23 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 12–26 (transplant) | – |
| Rhubarb (crowns) | – | Mar 12–26 (transplant) | – |
| Strawberry (plants) | – | Mar 12–26 (transplant) | Sep 1–29 (transplant) |
Typical ranges from university extension planting calendars, adjusted to your frost dates. Probabilities, not guarantees. Fall windows that would overlap spring planting are left out, as are fall crops of frost-tender plants where the frost-free season is under 210 days.
Where these numbers come from
Station: Centerport, NY (NOAA GHCN-Daily ID USC00301309), elevation 30 ft, 2.6 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Farmingdale AP, NY | 10 mi | Apr 6 | Nov 6 |
| Mineola, NY | 15 mi | Apr 2 | Nov 12 |
| Wantagh Cedar Creek, NY | 16 mi | Apr 3 | Nov 11 |
The average last-frost dates of these stations span 7 days, a rough guide to local variation. See data sources & methods.
Frost questions for 11743
When is the last frost in 11743?
The average (50% chance) last spring freeze of 32°F for ZIP 11743 is April 9. For a more cautious planting date, use April 23, when only 1 year in 10 still sees a later freeze.
When is the first frost in 11743?
The average first fall freeze is November 10. In 1 year in 10 it comes by October 30.
What hardiness zone is 11743?
ZIP 11743 is in USDA zone 7b (5 to 10°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 11743 right now?
This page shows the latest 2-inch and 4-inch soil temperature from the nearest public soil station (USDA SCAN, NOAA USCRN or TexMesonet), or a labeled estimate when no station is close, against the 50–55°F spring pre-emergent band.
Nearby ZIP codes
11724 Cold Spring Harbor 11721 Centerport 11740 Greenlawn 11797 Woodbury 11768 Fort Salonga 11771 Oyster Bay Cove 11791 Syosset 11731 East Northport
Other ZIP codes in Suffolk County
06390 11701 11702 11703 11704 11705 11706 11713 11715 11716 11717 11718 11719 11720 11721 11722 11724 11725 11726 11727 11729 11730 11731 11733 All Suffolk County frost dates · New York frost dates
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- Freeze alerts
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Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.