Fall in zone 8aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 30291 (Union City, 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, Atlanta Hartsfield Intl AP, GA (7 miles away).
- Average last spring frostMar 1550% chance of a 32°F freeze after this date
- Average first fall frostNov 2050% chance of a 32°F freeze by this date
- Growing season (frost-free)252 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
65°F 55°F or warmer
24-hour average · latest 63°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Wedowee (59 mi).
4-inch depth
66°F 55°F or warmer
24-hour average · latest 64°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Wedowee (59 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 30291 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 66°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 Apr 30 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
- Arugula: fall sowing Sep 25–Oct 23
- Radish: fall sowing Oct 9–23
- Garlic: fall sowing Oct 9–Nov 6
- Shallot: fall sowing Oct 9–Nov 6
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 20: 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) | Feb 23 |
| 50% (the "average" last frost) | Mar 15 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 4 |
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 4 |
| 50% (the "average" first frost) | Nov 20 |
| 90% (late: most years have frozen by now) | Dec 10 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 29 | Nov 7 |
| 32°F (freeze) | Mar 15 | Nov 20 |
| 28°F (hard freeze) | Feb 28 | Dec 5 |
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 30291
Dates count from your average last spring frost (Mar 15) and first fall frost (Nov 20). 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 18–Feb 1 | Mar 22–Apr 5 (transplant) | Jul 24–Aug 21 (transplant) |
| Pepper (sweet and hot) | Jan 4–18 | Mar 29–Apr 12 (transplant) | Jul 31–Aug 21 (transplant) |
| Eggplant | Jan 4–18 | Mar 29–Apr 12 (transplant) | Jul 31–Aug 21 (transplant) |
| Tomatillo | Jan 18–Feb 1 | Mar 22–Apr 5 (transplant) | – |
| Lettuce | Jan 18–Feb 1 | Feb 22–Mar 15 (transplant) Feb 15–Mar 29 (sow outdoors) | Sep 25–Oct 16 (transplant) Sep 11–Oct 9 (sowing) |
| Spinach | – | Feb 1–22 (sow outdoors) | Sep 25–Oct 16 (sowing) |
| Kale | Jan 18–Feb 1 | Feb 15–Mar 1 (transplant) Feb 15–Mar 1 (sow outdoors) | Aug 28–Sep 25 (transplant) Aug 14–Sep 11 (sowing) |
| Collards | Jan 18–Feb 1 | Feb 15–Mar 15 (transplant) Feb 15–Mar 15 (sow outdoors) | Aug 28–Sep 25 (transplant) Aug 14–Sep 11 (sowing) |
| Broccoli | Jan 4–18 | Feb 15–Mar 1 (transplant) | Aug 14–Sep 11 (transplant) |
| Cabbage | Jan 4–18 | Feb 15–Mar 1 (transplant) | Aug 14–Sep 11 (transplant) |
| Cauliflower | Jan 4–18 | Mar 1–15 (transplant) | Aug 14–Sep 11 (transplant) |
| Brussels sprouts | Dec 21–Jan 4 | Feb 15–Mar 1 (transplant) | Jul 31–Aug 21 (transplant) |
| Kohlrabi | Jan 18–Feb 1 | Feb 15–Mar 1 (transplant) Feb 15–Mar 1 (sow outdoors) | Sep 11–25 (sowing) |
| Bok choy / Asian greens | – | Feb 15–Mar 1 (sow outdoors) | Sep 25–Oct 9 (sowing) |
| Arugula | – | Feb 15–Mar 15 (sow outdoors) | Sep 25–Oct 23 (sowing) |
| Mustard greens | – | Feb 15–Mar 8 (sow outdoors) | Sep 25–Oct 9 (sowing) |
| Swiss chard | Feb 1–15 | Mar 1–22 (transplant) Mar 1–29 (sow outdoors) | Sep 11–25 (sowing) |
| Beet | – | Feb 15–Mar 15 (sow outdoors) | Sep 11–25 (sowing) |
| Carrot | – | Feb 22–Mar 22 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Radish | – | Feb 8–Mar 22 (sow outdoors) | Oct 9–23 (sowing) |
| Turnip | – | Feb 15–Mar 8 (sow outdoors) | Sep 11–25 (sowing) |
| Parsnip | – | Feb 22–Mar 15 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 18–Feb 15 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Onion (bulbing) | Dec 21–Jan 4 | Feb 1–15 (transplant) | – |
| Green onion / scallion | – | Feb 1–Mar 1 (sow outdoors) | Sep 11–25 (sowing) |
| Leek | Dec 21–Jan 4 | Feb 15–Mar 1 (transplant) | – |
| Garlic | – | – | Oct 9–Nov 6 (sowing) |
| Shallot | – | Feb 1–15 (transplant) | Oct 9–Nov 6 (sowing) |
| Potato | – | Feb 15–Mar 1 (transplant) | Jul 31–Aug 14 (transplant) |
| Sweet potato | – | Apr 5–19 (transplant) | – |
| Sweet corn | – | Mar 22–Apr 5 (sow outdoors) | – |
| Bean, bush (snap) | – | Mar 22–Apr 5 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Bean, pole | – | Mar 22–Apr 5 (sow outdoors) | – |
| Lima bean | – | Mar 29–Apr 12 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 5–26 (sow outdoors) | – |
| Cucumber | Feb 15–22 | Mar 22–Apr 5 (transplant) Mar 22–Apr 5 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Summer squash / zucchini | Feb 15–22 | Mar 22–Apr 5 (transplant) Mar 22–Apr 5 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Winter squash | Feb 15–22 | Mar 22–Apr 5 (transplant) Mar 22–Apr 5 (sow outdoors) | – |
| Pumpkin | – | Mar 22–Apr 5 (sow outdoors) | – |
| Watermelon | Feb 15–22 | Mar 29–Apr 12 (transplant) Mar 29–Apr 12 (sow outdoors) | – |
| Cantaloupe / muskmelon | Feb 15–22 | Mar 29–Apr 12 (transplant) Mar 29–Apr 12 (sow outdoors) | – |
| Okra | Feb 1–15 | Mar 29–Apr 12 (transplant) Mar 29–Apr 12 (sow outdoors) | – |
| Celery | Dec 21–Jan 4 | Mar 22–29 (transplant) | – |
| Basil | Feb 1–15 | Mar 22–Apr 5 (transplant) Mar 22–Apr 5 (sow outdoors) | – |
| Cilantro | – | Mar 1–29 (sow outdoors) | Sep 25–Oct 9 (sowing) |
| Parsley | Jan 4–18 | Mar 1–15 (transplant) Feb 22–Mar 15 (sow outdoors) | – |
| Dill | – | Mar 15–29 (sow outdoors) | Sep 25–Oct 9 (sowing) |
| Sunflower | – | Mar 15–29 (sow outdoors) | – |
| Asparagus (crowns) | – | Feb 15–Mar 1 (transplant) | – |
| Rhubarb (crowns) | – | Feb 15–Mar 1 (transplant) | – |
| Strawberry (plants) | – | Feb 15–Mar 1 (transplant) | Sep 11–Oct 9 (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 15 here (the average last frost). Not affiliated with the program.
Where these numbers come from
Station: Atlanta Hartsfield Intl AP, GA (NOAA GHCN-Daily ID USW00013874), elevation 1,010 ft, 7.0 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Jonesboro, GA | 11 mi | Mar 25 | Nov 12 |
| Atlanta Fulton Co AP, GA | 14 mi | Mar 24 | Nov 8 |
| Atlanta, GA | 15 mi | Mar 26 | Nov 6 |
The average last-frost dates of these stations span 11 days, a rough guide to local variation. See data sources & methods.
Frost questions for 30291
When is the last frost in 30291?
The average (50% chance) last spring freeze of 32°F for ZIP 30291 is March 15. For a more cautious planting date, use April 4, when only 1 year in 10 still sees a later freeze.
When is the first frost in 30291?
The average first fall freeze is November 20. In 1 year in 10 it comes by November 4.
What hardiness zone is 30291?
ZIP 30291 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 30291 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
30349 South Fulton 30272 South Fulton 30213 South Fulton 30296 South Fulton 30214 Fayetteville 30337 College Park 30290 Tyrone 30274 Riverdale
Other ZIP codes in Fulton County
30004 30005 30009 30022 30075 30076 30097 30213 30268 30272 30303 30305 30306 30308 30309 30310 30311 30312 30313 30314 30315 30318 30324 30326 All Fulton County frost dates · Georgia 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.