Fall in zone 8aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 30238 (Irondale, GA)
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, Jonesboro, GA (3 miles away).
- Average last spring frostMar 2550% chance of a 32°F freeze after this date
- Average first fall frostNov 1250% chance of a 32°F freeze by this date
- Growing season (frost-free)235 daysmedian, 32°F threshold
- USDA hardiness zone8a10 to 15°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
70°F 55°F or warmer
24-hour average · latest 66°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Watkinsville 5 SSE (60 mi), Watkinsville #1 (61 mi).
4-inch depth
70°F 55°F or warmer
24-hour average · latest 68°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Watkinsville 5 SSE (60 mi), Watkinsville #1 (61 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 30238 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 70°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: 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 May 10 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
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 12: 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 2 |
| 50% (the "average" last frost) | Mar 25 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 10 |
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 12 |
| 90% (late: most years have frozen by now) | Dec 2 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 6 | Nov 1 |
| 32°F (freeze) | Mar 25 | Nov 12 |
| 28°F (hard freeze) | Mar 8 | Nov 28 |
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 30238
Dates count from your average last spring frost (Mar 25) and first fall frost (Nov 12). 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 28–Feb 11 | Apr 1–15 (transplant) | Jul 16–Aug 13 (transplant) |
| Pepper (sweet and hot) | Jan 14–28 | Apr 8–22 (transplant) | Jul 23–Aug 13 (transplant) |
| Eggplant | Jan 14–28 | Apr 8–22 (transplant) | Jul 23–Aug 13 (transplant) |
| Tomatillo | Jan 28–Feb 11 | Apr 1–15 (transplant) | – |
| Lettuce | Jan 28–Feb 11 | Mar 4–25 (transplant) Feb 25–Apr 8 (sow outdoors) | Sep 17–Oct 8 (transplant) Sep 3–Oct 1 (sowing) |
| Spinach | – | Feb 11–Mar 4 (sow outdoors) | Sep 17–Oct 8 (sowing) |
| Kale | Jan 28–Feb 11 | Feb 25–Mar 11 (transplant) Feb 25–Mar 11 (sow outdoors) | Aug 20–Sep 17 (transplant) Aug 6–Sep 3 (sowing) |
| Collards | Jan 28–Feb 11 | Feb 25–Mar 25 (transplant) Feb 25–Mar 25 (sow outdoors) | Aug 20–Sep 17 (transplant) Aug 6–Sep 3 (sowing) |
| Broccoli | Jan 14–28 | Feb 25–Mar 11 (transplant) | Aug 6–Sep 3 (transplant) |
| Cabbage | Jan 14–28 | Feb 25–Mar 11 (transplant) | Aug 6–Sep 3 (transplant) |
| Cauliflower | Jan 14–28 | Mar 11–25 (transplant) | Aug 6–Sep 3 (transplant) |
| Brussels sprouts | Dec 31–Jan 14 | Feb 25–Mar 11 (transplant) | Jul 23–Aug 13 (transplant) |
| Kohlrabi | Jan 28–Feb 11 | Feb 25–Mar 11 (transplant) Feb 25–Mar 11 (sow outdoors) | Sep 3–17 (sowing) |
| Bok choy / Asian greens | – | Feb 25–Mar 11 (sow outdoors) | Sep 17–Oct 1 (sowing) |
| Arugula | – | Feb 25–Mar 25 (sow outdoors) | Sep 17–Oct 15 (sowing) |
| Mustard greens | – | Feb 25–Mar 18 (sow outdoors) | Sep 17–Oct 1 (sowing) |
| Swiss chard | Feb 11–25 | Mar 11–Apr 1 (transplant) Mar 11–Apr 8 (sow outdoors) | Sep 3–17 (sowing) |
| Beet | – | Feb 25–Mar 25 (sow outdoors) | Sep 3–17 (sowing) |
| Carrot | – | Mar 4–Apr 1 (sow outdoors) | Aug 20–Sep 3 (sowing) |
| Radish | – | Feb 18–Apr 1 (sow outdoors) | Oct 1–15 (sowing) |
| Turnip | – | Feb 25–Mar 18 (sow outdoors) | Sep 3–17 (sowing) |
| Parsnip | – | Mar 4–25 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 28–Feb 25 (sow outdoors) | Aug 20–Sep 3 (sowing) |
| Onion (bulbing) | Dec 31–Jan 14 | Feb 11–25 (transplant) | – |
| Green onion / scallion | – | Feb 11–Mar 11 (sow outdoors) | Sep 3–17 (sowing) |
| Leek | Dec 31–Jan 14 | Feb 25–Mar 11 (transplant) | – |
| Garlic | – | – | Oct 1–29 (sowing) |
| Shallot | – | Feb 11–25 (transplant) | Oct 1–29 (sowing) |
| Potato | – | Feb 25–Mar 11 (transplant) | Jul 23–Aug 6 (transplant) |
| Sweet potato | – | Apr 15–29 (transplant) | – |
| Sweet corn | – | Apr 1–15 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 1–15 (sow outdoors) | Aug 20–Sep 3 (sowing) |
| Bean, pole | – | Apr 1–15 (sow outdoors) | – |
| Lima bean | – | Apr 8–22 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 15–May 6 (sow outdoors) | – |
| Cucumber | Feb 25–Mar 4 | Apr 1–15 (transplant) Apr 1–15 (sow outdoors) | Aug 20–Sep 3 (sowing) |
| Summer squash / zucchini | Feb 25–Mar 4 | Apr 1–15 (transplant) Apr 1–15 (sow outdoors) | Aug 20–Sep 3 (sowing) |
| Winter squash | Feb 25–Mar 4 | Apr 1–15 (transplant) Apr 1–15 (sow outdoors) | – |
| Pumpkin | – | Apr 1–15 (sow outdoors) | – |
| Watermelon | Feb 25–Mar 4 | Apr 8–22 (transplant) Apr 8–22 (sow outdoors) | – |
| Cantaloupe / muskmelon | Feb 25–Mar 4 | Apr 8–22 (transplant) Apr 8–22 (sow outdoors) | – |
| Okra | Feb 11–25 | Apr 8–22 (transplant) Apr 8–22 (sow outdoors) | – |
| Celery | Dec 31–Jan 14 | Apr 1–8 (transplant) | – |
| Basil | Feb 11–25 | Apr 1–15 (transplant) Apr 1–15 (sow outdoors) | – |
| Cilantro | – | Mar 11–Apr 8 (sow outdoors) | Sep 17–Oct 1 (sowing) |
| Parsley | Jan 14–28 | Mar 11–25 (transplant) Mar 4–25 (sow outdoors) | – |
| Dill | – | Mar 25–Apr 8 (sow outdoors) | Sep 17–Oct 1 (sowing) |
| Sunflower | – | Mar 25–Apr 8 (sow outdoors) | – |
| Asparagus (crowns) | – | Feb 25–Mar 11 (transplant) | – |
| Rhubarb (crowns) | – | Feb 25–Mar 11 (transplant) | – |
| Strawberry (plants) | – | Feb 25–Mar 11 (transplant) | Sep 3–Oct 1 (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
Georgia has a university or garden plant program: Georgia Gold Medal Plants (ended 2017). Plant frost-tender annuals after March 25 here (the average last frost). Not affiliated with the program.
Where these numbers come from
Station: Jonesboro, GA (NOAA GHCN-Daily ID USC00094700), elevation 930 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%) |
|---|---|---|---|
| Atlanta Hartsfield Intl AP, GA | 10 mi | Mar 15 | Nov 20 |
| Atlanta, GA | 14 mi | Mar 26 | Nov 6 |
| Experiment, GA | 17 mi | Mar 20 | Nov 13 |
The average last-frost dates of these stations span 11 days, a rough guide to local variation. See data sources & methods.
Frost questions for 30238
When is the last frost in 30238?
The average (50% chance) last spring freeze of 32°F for ZIP 30238 is March 25. For a more cautious planting date, use April 10, when only 1 year in 10 still sees a later freeze.
When is the first frost in 30238?
The average first fall freeze is November 12. In 1 year in 10 it comes by October 31.
What hardiness zone is 30238?
ZIP 30238 is in USDA zone 8a (10 to 15°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 30238 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
30236 Jonesboro 30274 Riverdale 30296 South Fulton 30214 Fayetteville 30250 Lovejoy 30260 Morrow 30297 Forest Park 30228 Hampton
Other ZIP codes in Clayton County
30236 30250 30260 30273 30274 30296 30297 All Clayton County frost dates · Georgia frost dates
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Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
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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.