Fall in zone 9aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 32221 (Jacksonville, 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, Jackson Whitehouse Nolf, FL (6 miles away).
- Average last spring frostFeb 2850% chance of a 32°F freeze after this date
- Average first fall frostDec 350% chance of a 32°F freeze by this date
- Growing season (frost-free)280 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°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
77°F 55°F or warmer
24-hour average · latest 74°F, as of Oct 18, 1:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Brunswick 23 S (45 mi).
4-inch depth
78°F 55°F or warmer
24-hour average · latest 77°F, as of Oct 18, 1:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Brunswick 23 S (45 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 32221 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 78°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent (annual bluegrass, winter weeds): not yet. Apply as soil cools toward 70°F (typically September to early October).
Fertilizer window
Lawn region: Southeast (warm, humid). Timing only; always follow the product label.
- Centipedegrass (warm-season): Spring: Not before mid-May (NC State); after full green-up (about Apr 15 here, using green-up about 3–4 weeks after your average last frost); Summer: Optional mid-summer feeding, especially on sandy coastal soils. Avoid: Early-spring feeding, frequent feeding and liming unless a soil test calls for it (centipede decline).
Plant now
- Lettuce: fall sowing Sep 24–Oct 22
- Lettuce: fall transplant Oct 8–29
- Spinach: fall sowing Oct 8–29
- Bok choy / Asian greens: fall sowing Oct 8–22
- Arugula: fall sowing Oct 8–Nov 5
- Mustard greens: fall sowing Oct 8–22
- Cilantro: fall sowing Oct 8–22
- Dill: fall sowing Oct 8–22
- Strawberry (plants): fall transplant Sep 24–Oct 22
Coming up in the next 3 weeks
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Dec 3: 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) | Jan 30 |
| 50% (the "average" last frost) | Feb 28 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 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) | Nov 11 |
| 50% (the "average" first frost) | Dec 3 |
| 90% (late: most years have frozen by now) | Jan 7 (next year) |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 16 | Nov 20 |
| 32°F (freeze) | Feb 28 | Dec 3 |
| 28°F (hard freeze) | Feb 11 | Dec 27 |
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 32221
Dates count from your average last spring frost (Feb 28) and first fall frost (Dec 3). 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 | Jan 3–17 | Mar 7–21 (transplant) | Aug 6–Sep 3 (transplant) |
| Pepper (sweet and hot) | Dec 20–Jan 3 | Mar 14–28 (transplant) | Aug 13–Sep 3 (transplant) |
| Eggplant | Dec 20–Jan 3 | Mar 14–28 (transplant) | Aug 13–Sep 3 (transplant) |
| Tomatillo | Jan 3–17 | Mar 7–21 (transplant) | – |
| Lettuce | Jan 3–17 | Feb 7–28 (transplant) Jan 31–Mar 14 (sow outdoors) | Oct 8–29 (transplant) Sep 24–Oct 22 (sowing) |
| Spinach | – | Jan 17–Feb 7 (sow outdoors) | Oct 8–29 (sowing) |
| Kale | Jan 3–17 | Jan 31–Feb 14 (transplant) Jan 31–Feb 14 (sow outdoors) | Sep 10–Oct 8 (transplant) Aug 27–Sep 24 (sowing) |
| Collards | Jan 3–17 | Jan 31–Feb 28 (transplant) Jan 31–Feb 28 (sow outdoors) | Sep 10–Oct 8 (transplant) Aug 27–Sep 24 (sowing) |
| Broccoli | Dec 20–Jan 3 | Jan 31–Feb 14 (transplant) | Aug 27–Sep 24 (transplant) |
| Cabbage | Dec 20–Jan 3 | Jan 31–Feb 14 (transplant) | Aug 27–Sep 24 (transplant) |
| Cauliflower | Dec 20–Jan 3 | Feb 14–28 (transplant) | Aug 27–Sep 24 (transplant) |
| Brussels sprouts | Dec 6–20 | Jan 31–Feb 14 (transplant) | Aug 13–Sep 3 (transplant) |
| Kohlrabi | Jan 3–17 | Jan 31–Feb 14 (transplant) Jan 31–Feb 14 (sow outdoors) | Sep 24–Oct 8 (sowing) |
| Bok choy / Asian greens | – | Jan 31–Feb 14 (sow outdoors) | Oct 8–22 (sowing) |
| Arugula | – | Jan 31–Feb 28 (sow outdoors) | Oct 8–Nov 5 (sowing) |
| Mustard greens | – | Jan 31–Feb 21 (sow outdoors) | Oct 8–22 (sowing) |
| Swiss chard | Jan 17–31 | Feb 14–Mar 7 (transplant) Feb 14–Mar 14 (sow outdoors) | Sep 24–Oct 8 (sowing) |
| Beet | – | Jan 31–Feb 28 (sow outdoors) | Sep 24–Oct 8 (sowing) |
| Carrot | – | Feb 7–Mar 7 (sow outdoors) | Sep 10–24 (sowing) |
| Radish | – | Jan 24–Mar 7 (sow outdoors) | Oct 22–Nov 5 (sowing) |
| Turnip | – | Jan 31–Feb 21 (sow outdoors) | Sep 24–Oct 8 (sowing) |
| Parsnip | – | Feb 7–28 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 3–31 (sow outdoors) | Sep 10–24 (sowing) |
| Onion (bulbing) | Dec 6–20 | Jan 17–31 (transplant) | – |
| Green onion / scallion | – | Jan 17–Feb 14 (sow outdoors) | Sep 24–Oct 8 (sowing) |
| Leek | Dec 6–20 | Jan 31–Feb 14 (transplant) | – |
| Garlic | – | – | Oct 22–Nov 19 (sowing) |
| Shallot | – | Jan 17–31 (transplant) | Oct 22–Nov 19 (sowing) |
| Potato | – | Jan 31–Feb 14 (transplant) | Aug 13–27 (transplant) |
| Sweet potato | – | Mar 21–Apr 4 (transplant) | – |
| Sweet corn | – | Mar 7–21 (sow outdoors) | – |
| Bean, bush (snap) | – | Mar 7–21 (sow outdoors) | Sep 10–24 (sowing) |
| Bean, pole | – | Mar 7–21 (sow outdoors) | – |
| Lima bean | – | Mar 14–28 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 21–Apr 11 (sow outdoors) | – |
| Cucumber | Jan 31–Feb 7 | Mar 7–21 (transplant) Mar 7–21 (sow outdoors) | Sep 10–24 (sowing) |
| Summer squash / zucchini | Jan 31–Feb 7 | Mar 7–21 (transplant) Mar 7–21 (sow outdoors) | Sep 10–24 (sowing) |
| Winter squash | Jan 31–Feb 7 | Mar 7–21 (transplant) Mar 7–21 (sow outdoors) | – |
| Pumpkin | – | Mar 7–21 (sow outdoors) | – |
| Watermelon | Jan 31–Feb 7 | Mar 14–28 (transplant) Mar 14–28 (sow outdoors) | – |
| Cantaloupe / muskmelon | Jan 31–Feb 7 | Mar 14–28 (transplant) Mar 14–28 (sow outdoors) | – |
| Okra | Jan 17–31 | Mar 14–28 (transplant) Mar 14–28 (sow outdoors) | – |
| Celery | Dec 6–20 | Mar 7–14 (transplant) | – |
| Basil | Jan 17–31 | Mar 7–21 (transplant) Mar 7–21 (sow outdoors) | – |
| Cilantro | – | Feb 14–Mar 14 (sow outdoors) | Oct 8–22 (sowing) |
| Parsley | Dec 20–Jan 3 | Feb 14–28 (transplant) Feb 7–28 (sow outdoors) | – |
| Dill | – | Feb 28–Mar 14 (sow outdoors) | Oct 8–22 (sowing) |
| Sunflower | – | Feb 28–Mar 14 (sow outdoors) | – |
| Asparagus (crowns) | – | Jan 31–Feb 14 (transplant) | – |
| Rhubarb (crowns) | – | Jan 31–Feb 14 (transplant) | – |
| Strawberry (plants) | – | Jan 31–Feb 14 (transplant) | Sep 24–Oct 22 (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 February 28 here (the average last frost). Not affiliated with the program.
Where these numbers come from
Station: Jackson Whitehouse Nolf, FL (NOAA GHCN-Daily ID USW00063890), elevation 99 ft, 6.3 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%) |
|---|---|---|---|
| Jacksonville NAS, FL | 13 mi | Feb 1 | Jan 5 (next year) |
| Glen St Mary 1 W, FL | 18 mi | Mar 8 | Dec 1 |
| Jacksonville, FL | 19 mi | Feb 25 | Dec 7 |
The average last-frost dates of these stations span 38 days, a rough guide to local variation. See data sources & methods.
Frost questions for 32221
When is the last frost in 32221?
The average (50% chance) last spring freeze of 32°F for ZIP 32221 is February 28. For a more cautious planting date, use March 23, when only 1 year in 10 still sees a later freeze.
When is the first frost in 32221?
The average first fall freeze is December 3. In 1 year in 10 it comes by November 11.
What hardiness zone is 32221?
ZIP 32221 is in USDA zone 9a (20 to 25°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 32221 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
32222 Jacksonville 32220 Jacksonville 32065 Oakleaf Plantation 32210 Jacksonville 32234 Jacksonville 32244 Jacksonville 32205 Jacksonville 32254 Jacksonville
Other ZIP codes in Duval County
32202 32203 32204 32205 32206 32207 32208 32209 32210 32211 32212 32214 32216 32217 32218 32219 32220 32222 32223 32224 32225 32226 32227 32228 All Duval County frost dates · Florida 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.