Frost dates for ZIP 33478 (Jupiter Farms, 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, Palm Beach Gardens, FL (10 miles away).
Freezes are uncommon here
NOAA's normals for this station show a 32°F night in about 18% of years (about 1 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 2150% chance of a 32°F freeze after this date
- Average first fall frostJan 15 (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
Get The Dial for 33478 (Jupiter Farms)
Frost and freeze alerts from the NWS forecast for 33478, the spring soil-temperature heads-up for pre-emergent, and a short weekly yard-timing email.
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.
This week in your yard
As of Oct 17, 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 33478 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 1 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
- Kale: fall sowing Oct 9–Nov 6
- Collards: fall sowing Oct 9–Nov 6
- Broccoli: fall transplant Oct 9–Nov 6
- Cabbage: fall transplant Oct 9–Nov 6
- Cauliflower: fall transplant Oct 9–Nov 6
Coming up in the next 3 weeks
- Lettuce: fall sowing Nov 6–Dec 4
- Kale: fall transplant Oct 23–Nov 20
- Collards: fall transplant Oct 23–Nov 20
- Brussels sprouts: start seeds indoors Oct 29–Nov 12
- Kohlrabi: fall sowing Nov 6–20
- Swiss chard: fall sowing Nov 6–20
- Beet: fall sowing Nov 6–20
- Carrot: fall sowing Oct 23–Nov 6
- Turnip: fall sowing Nov 6–20
- Pea (garden, snap, snow): fall sowing Oct 23–Nov 6
- Onion (bulbing): start seeds indoors Oct 29–Nov 12
- Green onion / scallion: fall sowing Nov 6–20
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 29 (prior Dec) |
| 50% (the "average" last frost) | Jan 21 |
| 10% (cautious: only 1 year in 10 freezes later) | Feb 12 |
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 25 |
| 50% (the "average" first frost) | Jan 15 (next year) |
| 90% (late: most years have frozen by now) | Feb 9 (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 31 | Jan 17 (next year) |
| 32°F (freeze) | Jan 21 | Jan 15 (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 33478
Dates count from your average last spring frost (Jan 21) and first fall frost (Jan 15). 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 26–Dec 10 | Jan 28–Feb 11 (transplant) | Sep 18–Oct 16 (transplant) |
| Pepper (sweet and hot) | Nov 12–26 | Feb 4–18 (transplant) | Sep 25–Oct 16 (transplant) |
| Eggplant | Nov 12–26 | Feb 4–18 (transplant) | Sep 25–Oct 16 (transplant) |
| Tomatillo | Nov 26–Dec 10 | Jan 28–Feb 11 (transplant) | – |
| Lettuce | Nov 26–Dec 10 | Dec 31–Jan 21 (transplant) Dec 24–Feb 4 (sow outdoors) | Nov 20–Dec 11 (transplant) Nov 6–Dec 4 (sowing) |
| Spinach | – | Dec 10–31 (sow outdoors) | Nov 20–Dec 11 (sowing) |
| Kale | Nov 26–Dec 10 | Dec 24–Jan 7 (transplant) Dec 24–Jan 7 (sow outdoors) | Oct 23–Nov 20 (transplant) Oct 9–Nov 6 (sowing) |
| Collards | Nov 26–Dec 10 | Dec 24–Jan 21 (transplant) Dec 24–Jan 21 (sow outdoors) | Oct 23–Nov 20 (transplant) Oct 9–Nov 6 (sowing) |
| Broccoli | Nov 12–26 | Dec 24–Jan 7 (transplant) | Oct 9–Nov 6 (transplant) |
| Cabbage | Nov 12–26 | Dec 24–Jan 7 (transplant) | Oct 9–Nov 6 (transplant) |
| Cauliflower | Nov 12–26 | Jan 7–21 (transplant) | Oct 9–Nov 6 (transplant) |
| Brussels sprouts | Oct 29–Nov 12 | Dec 24–Jan 7 (transplant) | Sep 25–Oct 16 (transplant) |
| Kohlrabi | Nov 26–Dec 10 | Dec 24–Jan 7 (transplant) Dec 24–Jan 7 (sow outdoors) | Nov 6–20 (sowing) |
| Bok choy / Asian greens | – | Dec 24–Jan 7 (sow outdoors) | Nov 20–Dec 4 (sowing) |
| Arugula | – | Dec 24–Jan 21 (sow outdoors) | Nov 20–Dec 18 (sowing) |
| Mustard greens | – | Dec 24–Jan 14 (sow outdoors) | Nov 20–Dec 4 (sowing) |
| Swiss chard | Dec 10–24 | Jan 7–28 (transplant) Jan 7–Feb 4 (sow outdoors) | Nov 6–20 (sowing) |
| Beet | – | Dec 24–Jan 21 (sow outdoors) | Nov 6–20 (sowing) |
| Carrot | – | Dec 31–Jan 28 (sow outdoors) | Oct 23–Nov 6 (sowing) |
| Radish | – | Dec 17–Jan 28 (sow outdoors) | Dec 4–18 (sowing) |
| Turnip | – | Dec 24–Jan 14 (sow outdoors) | Nov 6–20 (sowing) |
| Parsnip | – | Dec 31–Jan 21 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Nov 26–Dec 24 (sow outdoors) | Oct 23–Nov 6 (sowing) |
| Onion (bulbing) | Oct 29–Nov 12 | Dec 10–24 (transplant) | – |
| Green onion / scallion | – | Dec 10–Jan 7 (sow outdoors) | Nov 6–20 (sowing) |
| Leek | Oct 29–Nov 12 | Dec 24–Jan 7 (transplant) | – |
| Garlic | – | – | Dec 4–Jan 1 (sowing) |
| Shallot | – | Dec 10–24 (transplant) | Dec 4–Jan 1 (sowing) |
| Potato | – | Dec 24–Jan 7 (transplant) | Sep 25–Oct 9 (transplant) |
| Sweet potato | – | Feb 11–25 (transplant) | – |
| Sweet corn | – | Jan 28–Feb 11 (sow outdoors) | – |
| Bean, bush (snap) | – | Jan 28–Feb 11 (sow outdoors) | Oct 23–Nov 6 (sowing) |
| Bean, pole | – | Jan 28–Feb 11 (sow outdoors) | – |
| Lima bean | – | Feb 4–18 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Feb 11–Mar 4 (sow outdoors) | – |
| Cucumber | Dec 24–31 | Jan 28–Feb 11 (transplant) Jan 28–Feb 11 (sow outdoors) | Oct 23–Nov 6 (sowing) |
| Summer squash / zucchini | Dec 24–31 | Jan 28–Feb 11 (transplant) Jan 28–Feb 11 (sow outdoors) | Oct 23–Nov 6 (sowing) |
| Winter squash | Dec 24–31 | Jan 28–Feb 11 (transplant) Jan 28–Feb 11 (sow outdoors) | – |
| Pumpkin | – | Jan 28–Feb 11 (sow outdoors) | – |
| Watermelon | Dec 24–31 | Feb 4–18 (transplant) Feb 4–18 (sow outdoors) | – |
| Cantaloupe / muskmelon | Dec 24–31 | Feb 4–18 (transplant) Feb 4–18 (sow outdoors) | – |
| Okra | Dec 10–24 | Feb 4–18 (transplant) Feb 4–18 (sow outdoors) | – |
| Celery | Oct 29–Nov 12 | Jan 28–Feb 4 (transplant) | – |
| Basil | Dec 10–24 | Jan 28–Feb 11 (transplant) Jan 28–Feb 11 (sow outdoors) | – |
| Cilantro | – | Jan 7–Feb 4 (sow outdoors) | Nov 20–Dec 4 (sowing) |
| Parsley | Nov 12–26 | Jan 7–21 (transplant) Dec 31–Jan 21 (sow outdoors) | – |
| Dill | – | Jan 21–Feb 4 (sow outdoors) | Nov 20–Dec 4 (sowing) |
| Sunflower | – | Jan 21–Feb 4 (sow outdoors) | – |
| Asparagus (crowns) | – | Dec 24–Jan 7 (transplant) | – |
| Rhubarb (crowns) | – | Dec 24–Jan 7 (transplant) | – |
| Strawberry (plants) | – | Dec 24–Jan 7 (transplant) | Nov 6–Dec 4 (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 21 here (the average last frost). Not affiliated with the program.
Where these numbers come from
Station: Palm Beach Gardens, FL (NOAA GHCN-Daily ID USC00086764), elevation 20 ft, 10.4 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Port Salerno 5W, FL | 11 mi | Jan 26 | Jan 15 (next year) |
| Juno Beach, FL | 14 mi | Jan 26 | Jan 16 (next year) |
| Stuart, FL | 17 mi | Jan 23 | Jan 18 (next year) |
The average last-frost dates of these stations span 5 days, a rough guide to local variation. See data sources & methods.
Frost questions for 33478
When is the last frost in 33478?
The average (50% chance) last spring freeze of 32°F for ZIP 33478 is January 21. For a more cautious planting date, use February 12, when only 1 year in 10 still sees a later freeze.
When is the first frost in 33478?
The average first fall freeze is January 15 (next year). In 1 year in 10 it comes by December 25.
What hardiness zone is 33478?
ZIP 33478 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 33478 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
33418 Palm Beach Gardens 34997 Port Salerno 33458 Jupiter 33412 West Palm Beach 33455 Hobe Sound 33469 Tequesta 33477 Jupiter 33410 Palm Beach Gardens
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
Never miss a frost: get The Dial
Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
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.