Fall in zone 7bPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 11939 (East Marion, 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, Orient Pt Sp, NY (3 miles away).
- Average last spring frostApr 650% chance of a 32°F freeze after this date
- Average first fall frostNov 1750% chance of a 32°F freeze by this date
- Growing season (frost-free)221 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
57°F 55°F or warmer
24-hour average · latest 53°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Kingston 1 W (47 mi), Kingston 1 NW (47 mi).
4-inch depth
58°F 55°F or warmer
24-hour average · latest 56°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Kingston 1 W (47 mi), Kingston 1 NW (47 mi).
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 11939 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 58°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent (annual bluegrass, winter weeds): window open as soil cools through the 70s and 60s.
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
- Arugula: fall sowing Sep 22–Oct 20
- Radish: fall sowing Oct 6–20
- Garlic: fall sowing Oct 6–Nov 3
- Shallot: fall sowing Oct 6–Nov 3
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 17: 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 25 |
| 50% (the "average" last frost) | Apr 6 |
| 10% (cautious: only 1 year in 10 freezes later) | May 2 |
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 31 |
| 50% (the "average" first frost) | Nov 17 |
| 90% (late: most years have frozen by now) | Dec 4 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 30 | Nov 3 |
| 32°F (freeze) | Apr 6 | Nov 17 |
| 28°F (hard freeze) | Mar 25 | Dec 1 |
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 11939
Dates count from your average last spring frost (Apr 6) and first fall frost (Nov 17). 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 9–23 | Apr 13–27 (transplant) | Jul 21–Aug 18 (transplant) |
| Pepper (sweet and hot) | Jan 26–Feb 9 | Apr 20–May 4 (transplant) | Jul 28–Aug 18 (transplant) |
| Eggplant | Jan 26–Feb 9 | Apr 20–May 4 (transplant) | Jul 28–Aug 18 (transplant) |
| Tomatillo | Feb 9–23 | Apr 13–27 (transplant) | – |
| Lettuce | Feb 9–23 | Mar 16–Apr 6 (transplant) Mar 9–Apr 20 (sow outdoors) | Sep 22–Oct 13 (transplant) Sep 8–Oct 6 (sowing) |
| Spinach | – | Feb 23–Mar 16 (sow outdoors) | Sep 22–Oct 13 (sowing) |
| Kale | Feb 9–23 | Mar 9–23 (transplant) Mar 9–23 (sow outdoors) | Aug 25–Sep 22 (transplant) Aug 11–Sep 8 (sowing) |
| Collards | Feb 9–23 | Mar 9–Apr 6 (transplant) Mar 9–Apr 6 (sow outdoors) | Aug 25–Sep 22 (transplant) Aug 11–Sep 8 (sowing) |
| Broccoli | Jan 26–Feb 9 | Mar 9–23 (transplant) | Aug 11–Sep 8 (transplant) |
| Cabbage | Jan 26–Feb 9 | Mar 9–23 (transplant) | Aug 11–Sep 8 (transplant) |
| Cauliflower | Jan 26–Feb 9 | Mar 23–Apr 6 (transplant) | Aug 11–Sep 8 (transplant) |
| Brussels sprouts | Jan 12–26 | Mar 9–23 (transplant) | Jul 28–Aug 18 (transplant) |
| Kohlrabi | Feb 9–23 | Mar 9–23 (transplant) Mar 9–23 (sow outdoors) | Sep 8–22 (sowing) |
| Bok choy / Asian greens | – | Mar 9–23 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Arugula | – | Mar 9–Apr 6 (sow outdoors) | Sep 22–Oct 20 (sowing) |
| Mustard greens | – | Mar 9–30 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Swiss chard | Feb 23–Mar 9 | Mar 23–Apr 13 (transplant) Mar 23–Apr 20 (sow outdoors) | Sep 8–22 (sowing) |
| Beet | – | Mar 9–Apr 6 (sow outdoors) | Sep 8–22 (sowing) |
| Carrot | – | Mar 16–Apr 13 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Radish | – | Mar 2–Apr 13 (sow outdoors) | Oct 6–20 (sowing) |
| Turnip | – | Mar 9–30 (sow outdoors) | Sep 8–22 (sowing) |
| Parsnip | – | Mar 16–Apr 6 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 9–Mar 9 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Onion (bulbing) | Jan 12–26 | Feb 23–Mar 9 (transplant) | – |
| Green onion / scallion | – | Feb 23–Mar 23 (sow outdoors) | Sep 8–22 (sowing) |
| Leek | Jan 12–26 | Mar 9–23 (transplant) | – |
| Garlic | – | – | Oct 6–Nov 3 (sowing) |
| Shallot | – | Feb 23–Mar 9 (transplant) | Oct 6–Nov 3 (sowing) |
| Potato | – | Mar 9–23 (transplant) | Jul 28–Aug 11 (transplant) |
| Sweet potato | – | Apr 27–May 11 (transplant) | – |
| Sweet corn | – | Apr 13–27 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 13–27 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Bean, pole | – | Apr 13–27 (sow outdoors) | – |
| Lima bean | – | Apr 20–May 4 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 27–May 18 (sow outdoors) | – |
| Cucumber | Mar 9–16 | Apr 13–27 (transplant) Apr 13–27 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Summer squash / zucchini | Mar 9–16 | Apr 13–27 (transplant) Apr 13–27 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Winter squash | Mar 9–16 | Apr 13–27 (transplant) Apr 13–27 (sow outdoors) | – |
| Pumpkin | – | Apr 13–27 (sow outdoors) | – |
| Watermelon | Mar 9–16 | Apr 20–May 4 (transplant) Apr 20–May 4 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 9–16 | Apr 20–May 4 (transplant) Apr 20–May 4 (sow outdoors) | – |
| Okra | Feb 23–Mar 9 | Apr 20–May 4 (transplant) Apr 20–May 4 (sow outdoors) | – |
| Celery | Jan 12–26 | Apr 13–20 (transplant) | – |
| Basil | Feb 23–Mar 9 | Apr 13–27 (transplant) Apr 13–27 (sow outdoors) | – |
| Cilantro | – | Mar 23–Apr 20 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Parsley | Jan 26–Feb 9 | Mar 23–Apr 6 (transplant) Mar 16–Apr 6 (sow outdoors) | – |
| Dill | – | Apr 6–20 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Sunflower | – | Apr 6–20 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 9–23 (transplant) | – |
| Rhubarb (crowns) | – | Mar 9–23 (transplant) | – |
| Strawberry (plants) | – | Mar 9–23 (transplant) | Sep 8–Oct 6 (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: Orient Pt Sp, NY (NOAA GHCN-Daily ID USC00306276), elevation 3 ft, 3.2 miles from the ZIP's center point. NOAA completeness flag: E (estimated from nearby stations).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Bridgehampton, NY | 13 mi | Apr 23 | Oct 24 |
| Mattituck, NY | 14 mi | Apr 19 | Nov 1 |
| Groton New London AP, CT | 19 mi | Apr 16 | Oct 28 |
The average last-frost dates of these stations span 17 days, a rough guide to local variation. See data sources & methods.
Frost questions for 11939
When is the last frost in 11939?
The average (50% chance) last spring freeze of 32°F for ZIP 11939 is April 6. For a more cautious planting date, use May 2, when only 1 year in 10 still sees a later freeze.
When is the first frost in 11939?
The average first fall freeze is November 17. In 1 year in 10 it comes by October 31.
What hardiness zone is 11939?
ZIP 11939 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 11939 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
11944 Greenport West 11965 Shelter Island Heights 11964 Shelter Island 11971 Southold 11963 Noyack 11958 Peconic 06376 11957 Orient
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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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.