Fall in zone 7bPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 38330 (Dyer, TN)
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, Alamo 1 N, TN (19 miles away).
- Average last spring frostMar 2850% chance of a 32°F freeze after this date
- Average first fall frostNov 450% chance of a 32°F freeze by this date
- Growing season (frost-free)220 daysmedian, 32°F threshold
- USDA hardiness zone7b5 to 10°F avg. coldest night
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Frost and freeze alerts from the NWS forecast for 38330, the spring soil-temperature heads-up for pre-emergent, and a short weekly yard-timing email.
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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
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 38330 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 early March to early April; fall late August to mid-September.
Fertilizer window
Lawn region: Transition zone. Timing only; always follow the product label.
- Bermudagrass (warm-season): Spring: Several weeks after the lawn is fully green (April–May) (about May 13 here, using green-up about 3–4 weeks after your average last frost); Summer: Every 4–6 weeks through mid-August (heaviest feeder of the group); Late: Light, low-nitrogen/high-potassium feeding about 4 weeks before first frost, or skip. Avoid: Heavy late-fall nitrogen (linked to spring dead spot).
- Tall fescue (cool-season): Early fall: September (main feeding); Late fall: November, while still green; Late winter: Optional light feeding February–March. Avoid: Feeding after mid-spring and through summer in the transition zone (stress and brown patch).
Plant now
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 4: 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 11 |
| 50% (the "average" last frost) | Mar 28 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 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) | Oct 22 |
| 50% (the "average" first frost) | Nov 4 |
| 90% (late: most years have frozen by now) | Nov 20 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 7 | Oct 25 |
| 32°F (freeze) | Mar 28 | Nov 4 |
| 28°F (hard freeze) | Mar 16 | Nov 15 |
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 38330
Dates count from your average last spring frost (Mar 28) and first fall frost (Nov 4). 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 31–Feb 14 | Apr 4–18 (transplant) | Jul 8–Aug 5 (transplant) |
| Pepper (sweet and hot) | Jan 17–31 | Apr 11–25 (transplant) | Jul 15–Aug 5 (transplant) |
| Eggplant | Jan 17–31 | Apr 11–25 (transplant) | Jul 15–Aug 5 (transplant) |
| Tomatillo | Jan 31–Feb 14 | Apr 4–18 (transplant) | – |
| Lettuce | Jan 31–Feb 14 | Mar 7–28 (transplant) Feb 28–Apr 11 (sow outdoors) | Sep 9–30 (transplant) Aug 26–Sep 23 (sowing) |
| Spinach | – | Feb 14–Mar 7 (sow outdoors) | Sep 9–30 (sowing) |
| Kale | Jan 31–Feb 14 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | Aug 12–Sep 9 (transplant) Jul 29–Aug 26 (sowing) |
| Collards | Jan 31–Feb 14 | Feb 28–Mar 28 (transplant) Feb 28–Mar 28 (sow outdoors) | Aug 12–Sep 9 (transplant) Jul 29–Aug 26 (sowing) |
| Broccoli | Jan 17–31 | Feb 28–Mar 14 (transplant) | Jul 29–Aug 26 (transplant) |
| Cabbage | Jan 17–31 | Feb 28–Mar 14 (transplant) | Jul 29–Aug 26 (transplant) |
| Cauliflower | Jan 17–31 | Mar 14–28 (transplant) | Jul 29–Aug 26 (transplant) |
| Brussels sprouts | Jan 3–17 | Feb 28–Mar 14 (transplant) | Jul 15–Aug 5 (transplant) |
| Kohlrabi | Jan 31–Feb 14 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Bok choy / Asian greens | – | Feb 28–Mar 14 (sow outdoors) | Sep 9–23 (sowing) |
| Arugula | – | Feb 28–Mar 28 (sow outdoors) | Sep 9–Oct 7 (sowing) |
| Mustard greens | – | Feb 28–Mar 21 (sow outdoors) | Sep 9–23 (sowing) |
| Swiss chard | Feb 14–28 | Mar 14–Apr 4 (transplant) Mar 14–Apr 11 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Beet | – | Feb 28–Mar 28 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Carrot | – | Mar 7–Apr 4 (sow outdoors) | Aug 12–26 (sowing) |
| Radish | – | Feb 21–Apr 4 (sow outdoors) | Sep 23–Oct 7 (sowing) |
| Turnip | – | Feb 28–Mar 21 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Parsnip | – | Mar 7–28 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 31–Feb 28 (sow outdoors) | Aug 12–26 (sowing) |
| Onion (bulbing) | Jan 3–17 | Feb 14–28 (transplant) | – |
| Green onion / scallion | – | Feb 14–Mar 14 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Leek | Jan 3–17 | Feb 28–Mar 14 (transplant) | – |
| Garlic | – | – | Sep 23–Oct 21 (sowing) |
| Shallot | – | Feb 14–28 (transplant) | Sep 23–Oct 21 (sowing) |
| Potato | – | Feb 28–Mar 14 (transplant) | Jul 15–29 (transplant) |
| Sweet potato | – | Apr 18–May 2 (transplant) | – |
| Sweet corn | – | Apr 4–18 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 4–18 (sow outdoors) | Aug 12–26 (sowing) |
| Bean, pole | – | Apr 4–18 (sow outdoors) | – |
| Lima bean | – | Apr 11–25 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 18–May 9 (sow outdoors) | – |
| Cucumber | Feb 28–Mar 7 | Apr 4–18 (transplant) Apr 4–18 (sow outdoors) | Aug 12–26 (sowing) |
| Summer squash / zucchini | Feb 28–Mar 7 | Apr 4–18 (transplant) Apr 4–18 (sow outdoors) | Aug 12–26 (sowing) |
| Winter squash | Feb 28–Mar 7 | Apr 4–18 (transplant) Apr 4–18 (sow outdoors) | – |
| Pumpkin | – | Apr 4–18 (sow outdoors) | – |
| Watermelon | Feb 28–Mar 7 | Apr 11–25 (transplant) Apr 11–25 (sow outdoors) | – |
| Cantaloupe / muskmelon | Feb 28–Mar 7 | Apr 11–25 (transplant) Apr 11–25 (sow outdoors) | – |
| Okra | Feb 14–28 | Apr 11–25 (transplant) Apr 11–25 (sow outdoors) | – |
| Celery | Jan 3–17 | Apr 4–11 (transplant) | – |
| Basil | Feb 14–28 | Apr 4–18 (transplant) Apr 4–18 (sow outdoors) | – |
| Cilantro | – | Mar 14–Apr 11 (sow outdoors) | Sep 9–23 (sowing) |
| Parsley | Jan 17–31 | Mar 14–28 (transplant) Mar 7–28 (sow outdoors) | – |
| Dill | – | Mar 28–Apr 11 (sow outdoors) | Sep 9–23 (sowing) |
| Sunflower | – | Mar 28–Apr 11 (sow outdoors) | – |
| Asparagus (crowns) | – | Feb 28–Mar 14 (transplant) | – |
| Rhubarb (crowns) | – | Feb 28–Mar 14 (transplant) | – |
| Strawberry (plants) | – | Feb 28–Mar 14 (transplant) | Aug 26–Sep 23 (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.
Where these numbers come from
Station: Alamo 1 N, TN (NOAA GHCN-Daily ID USC00400049), elevation 330 ft, 19.4 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Milan EXP STN, TN | 20 mi | Apr 4 | Oct 28 |
| Martin U Of T Branch E, TN | 21 mi | Apr 4 | Oct 28 |
| Dyersburg, TN | 21 mi | Mar 31 | Nov 6 |
The average last-frost dates of these stations span 7 days, a rough guide to local variation. See data sources & methods.
Frost questions for 38330
When is the last frost in 38330?
The average (50% chance) last spring freeze of 32°F for ZIP 38330 is March 28. For a more cautious planting date, use April 12, when only 1 year in 10 still sees a later freeze.
When is the first frost in 38330?
The average first fall freeze is November 4. In 1 year in 10 it comes by October 22.
What hardiness zone is 38330?
ZIP 38330 is in USDA zone 7b (5 to 10°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 38330 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
38389 Yorkville 38369 Rutherford 38382 Trenton 38233 Kenton 38059 Newbern 38316 Bradford 38259 Trimble 38070
Other ZIP codes in Gibson County
38233 38316 38338 38343 38358 38369 38382 38389 All Gibson County frost dates · Tennessee 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.