Fall in zone 10bPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 33437 (Palm Beach County, FL)
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, Loxahatchee Nwr, FL (4 miles away).
Freezes are uncommon here
NOAA's normals for this station show a 32°F night in about 11% of years (about 0 freezing night(s) a year on average). The dates below describe freeze timing for the station's record; in many years there may be no 32°F freeze at all.
- Average last spring frostJan 2250% chance of a 32°F freeze after this date
- Average first fall frostJan 17 (next year)50% chance of a 32°F freeze by this date
- Growing season (frost-free)year-round in a typical yearmedian, 32°F threshold
- USDA hardiness zone10b35 to 40°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
Freezes are uncommon here, so frost-based timing is rough. Local extension calendars for frost-free areas use months.
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 33437 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 late January to mid-February (south Florida: earlier; check local soil temps); fall October to early November.
Fertilizer window
Lawn region: Gulf Coast and peninsular Florida. Timing only; always follow the product label.
- St. Augustinegrass (warm-season): Spring: About 2–3 weeks after full green-up (May in the Carolinas; earlier in Florida and south Texas) (about Mar 2 here, using green-up about 3–4 weeks after your average last frost); Summer: Light feedings June–August where local rules allow; Last: No later than about mid-September in the Carolinas, about 6–8 weeks before first frost elsewhere. Avoid: Feeding before green-up or late in fall (feeds weeds and favors large patch and cold injury).
Plant now
- Tomato: fall transplant Sep 20–Oct 18
- Pepper (sweet and hot): fall transplant Sep 27–Oct 18
- Eggplant: fall transplant Sep 27–Oct 18
- Kale: fall sowing Oct 11–Nov 8
- Collards: fall sowing Oct 11–Nov 8
- Broccoli: fall transplant Oct 11–Nov 8
- Cabbage: fall transplant Oct 11–Nov 8
- Cauliflower: fall transplant Oct 11–Nov 8
- Brussels sprouts: fall transplant Sep 27–Oct 18
Coming up in the next 3 weeks
- Lettuce: fall sowing Nov 8–Dec 6
- Kale: fall transplant Oct 25–Nov 22
- Collards: fall transplant Oct 25–Nov 22
- Brussels sprouts: start seeds indoors Oct 30–Nov 13
- Kohlrabi: fall sowing Nov 8–22
- Swiss chard: fall sowing Nov 8–22
- Beet: fall sowing Nov 8–22
- Carrot: fall sowing Oct 25–Nov 8
- Turnip: fall sowing Nov 8–22
- Pea (garden, snap, snow): fall sowing Oct 25–Nov 8
- Onion (bulbing): start seeds indoors Oct 30–Nov 13
- Green onion / scallion: fall sowing Nov 8–22
Prune now
No frost-timed pruning windows are open this week.
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) | Dec 31 (prior Dec) |
| 50% (the "average" last frost) | Jan 22 |
| 10% (cautious: only 1 year in 10 freezes later) | Feb 7 |
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) | Dec 31 |
| 50% (the "average" first frost) | Jan 17 (next year) |
| 90% (late: most years have frozen by now) | Feb 5 (next year) |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Jan 26 | Jan 16 (next year) |
| 32°F (freeze) | Jan 22 | Jan 17 (next year) |
| 28°F (hard freeze) | n/a | n/a |
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 33437
Dates count from your average last spring frost (Jan 22) and first fall frost (Jan 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 | Nov 27–Dec 11 | Jan 29–Feb 12 (transplant) | Sep 20–Oct 18 (transplant) |
| Pepper (sweet and hot) | Nov 13–27 | Feb 5–19 (transplant) | Sep 27–Oct 18 (transplant) |
| Eggplant | Nov 13–27 | Feb 5–19 (transplant) | Sep 27–Oct 18 (transplant) |
| Tomatillo | Nov 27–Dec 11 | Jan 29–Feb 12 (transplant) | – |
| Lettuce | Nov 27–Dec 11 | Jan 1–22 (transplant) Dec 25–Feb 5 (sow outdoors) | Nov 22–Dec 13 (transplant) Nov 8–Dec 6 (sowing) |
| Spinach | – | Dec 11–Jan 1 (sow outdoors) | Nov 22–Dec 13 (sowing) |
| Kale | Nov 27–Dec 11 | Dec 25–Jan 8 (transplant) Dec 25–Jan 8 (sow outdoors) | Oct 25–Nov 22 (transplant) Oct 11–Nov 8 (sowing) |
| Collards | Nov 27–Dec 11 | Dec 25–Jan 22 (transplant) Dec 25–Jan 22 (sow outdoors) | Oct 25–Nov 22 (transplant) Oct 11–Nov 8 (sowing) |
| Broccoli | Nov 13–27 | Dec 25–Jan 8 (transplant) | Oct 11–Nov 8 (transplant) |
| Cabbage | Nov 13–27 | Dec 25–Jan 8 (transplant) | Oct 11–Nov 8 (transplant) |
| Cauliflower | Nov 13–27 | Jan 8–22 (transplant) | Oct 11–Nov 8 (transplant) |
| Brussels sprouts | Oct 30–Nov 13 | Dec 25–Jan 8 (transplant) | Sep 27–Oct 18 (transplant) |
| Kohlrabi | Nov 27–Dec 11 | Dec 25–Jan 8 (transplant) Dec 25–Jan 8 (sow outdoors) | Nov 8–22 (sowing) |
| Bok choy / Asian greens | – | Dec 25–Jan 8 (sow outdoors) | Nov 22–Dec 6 (sowing) |
| Arugula | – | Dec 25–Jan 22 (sow outdoors) | Nov 22–Dec 20 (sowing) |
| Mustard greens | – | Dec 25–Jan 15 (sow outdoors) | Nov 22–Dec 6 (sowing) |
| Swiss chard | Dec 11–25 | Jan 8–29 (transplant) Jan 8–Feb 5 (sow outdoors) | Nov 8–22 (sowing) |
| Beet | – | Dec 25–Jan 22 (sow outdoors) | Nov 8–22 (sowing) |
| Carrot | – | Jan 1–29 (sow outdoors) | Oct 25–Nov 8 (sowing) |
| Radish | – | Dec 18–Jan 29 (sow outdoors) | Dec 6–20 (sowing) |
| Turnip | – | Dec 25–Jan 15 (sow outdoors) | Nov 8–22 (sowing) |
| Parsnip | – | Jan 1–22 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Nov 27–Dec 25 (sow outdoors) | Oct 25–Nov 8 (sowing) |
| Onion (bulbing) | Oct 30–Nov 13 | Dec 11–25 (transplant) | – |
| Green onion / scallion | – | Dec 11–Jan 8 (sow outdoors) | Nov 8–22 (sowing) |
| Leek | Oct 30–Nov 13 | Dec 25–Jan 8 (transplant) | – |
| Garlic | – | – | Dec 6–Jan 3 (sowing) |
| Shallot | – | Dec 11–25 (transplant) | Dec 6–Jan 3 (sowing) |
| Potato | – | Dec 25–Jan 8 (transplant) | Sep 27–Oct 11 (transplant) |
| Sweet potato | – | Feb 12–26 (transplant) | – |
| Sweet corn | – | Jan 29–Feb 12 (sow outdoors) | – |
| Bean, bush (snap) | – | Jan 29–Feb 12 (sow outdoors) | Oct 25–Nov 8 (sowing) |
| Bean, pole | – | Jan 29–Feb 12 (sow outdoors) | – |
| Lima bean | – | Feb 5–19 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Feb 12–Mar 5 (sow outdoors) | – |
| Cucumber | Dec 25–Jan 1 | Jan 29–Feb 12 (transplant) Jan 29–Feb 12 (sow outdoors) | Oct 25–Nov 8 (sowing) |
| Summer squash / zucchini | Dec 25–Jan 1 | Jan 29–Feb 12 (transplant) Jan 29–Feb 12 (sow outdoors) | Oct 25–Nov 8 (sowing) |
| Winter squash | Dec 25–Jan 1 | Jan 29–Feb 12 (transplant) Jan 29–Feb 12 (sow outdoors) | – |
| Pumpkin | – | Jan 29–Feb 12 (sow outdoors) | – |
| Watermelon | Dec 25–Jan 1 | Feb 5–19 (transplant) Feb 5–19 (sow outdoors) | – |
| Cantaloupe / muskmelon | Dec 25–Jan 1 | Feb 5–19 (transplant) Feb 5–19 (sow outdoors) | – |
| Okra | Dec 11–25 | Feb 5–19 (transplant) Feb 5–19 (sow outdoors) | – |
| Celery | Oct 30–Nov 13 | Jan 29–Feb 5 (transplant) | – |
| Basil | Dec 11–25 | Jan 29–Feb 12 (transplant) Jan 29–Feb 12 (sow outdoors) | – |
| Cilantro | – | Jan 8–Feb 5 (sow outdoors) | Nov 22–Dec 6 (sowing) |
| Parsley | Nov 13–27 | Jan 8–22 (transplant) Jan 1–22 (sow outdoors) | – |
| Dill | – | Jan 22–Feb 5 (sow outdoors) | Nov 22–Dec 6 (sowing) |
| Sunflower | – | Jan 22–Feb 5 (sow outdoors) | – |
| Asparagus (crowns) | – | Dec 25–Jan 8 (transplant) | – |
| Rhubarb (crowns) | – | Dec 25–Jan 8 (transplant) | – |
| Strawberry (plants) | – | Dec 25–Jan 8 (transplant) | Nov 8–Dec 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.
Plants that do well here
Florida has a university or garden plant program: Florida-Friendly Landscaping™ Plant Guide. Plant frost-tender annuals after January 22 here (the average last frost). Not affiliated with the program.
Where these numbers come from
Station: Loxahatchee Nwr, FL (NOAA GHCN-Daily ID USC00085184), elevation 21 ft, 4.2 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Palm Beach Gardens, FL | 22 mi | Jan 21 | Jan 15 (next year) |
| Juno Beach, FL | 25 mi | Jan 26 | Jan 16 (next year) |
| S Bay 15 S, FL | 31 mi | Jan 18 | Jan 14 (next year) |
The average last-frost dates of these stations span 8 days, a rough guide to local variation. See data sources & methods.
Frost questions for 33437
When is the last frost in 33437?
The average (50% chance) last spring freeze of 32°F for ZIP 33437 is January 22. For a more cautious planting date, use February 7, when only 1 year in 10 still sees a later freeze.
When is the first frost in 33437?
The average first fall freeze is January 17 (next year). In 1 year in 10 it comes by December 31.
What hardiness zone is 33437?
ZIP 33437 is in USDA zone 10b (35 to 40°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 33437 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
33436 Boynton Beach 33473 33472 33484 Delray Beach 33446 33426 Boynton Beach 33445 Delray Beach 33435 Boynton Beach
Other ZIP codes in Palm Beach County
33401 33403 33404 33405 33406 33407 33408 33409 33410 33411 33412 33413 33414 33415 33417 33418 33426 33428 33430 33431 33432 33433 33434 33435 All Palm Beach County frost dates · Florida 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.