Fall in zone 8aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 35673 (Trinity, AL)
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, Moulton 2, AL (11 miles away).
- Average last spring frostApr 250% chance of a 32°F freeze after this date
- Average first fall frostOct 3150% chance of a 32°F freeze by this date
- Growing season (frost-free)209 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
64°F 55°F or warmer
24-hour average · latest 61°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Stanley Farm (28 mi), Muscle Shoals 2 N (31 mi), Cullman-NAHRC (33 mi).
4-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 Stanley Farm (28 mi), Muscle Shoals 2 N (31 mi), Cullman-NAHRC (33 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 35673 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 65°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 18 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
No vegetable planting windows are open this week.
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Oct 31: 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 17 |
| 50% (the "average" last frost) | Apr 2 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 18 |
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 18 |
| 50% (the "average" first frost) | Oct 31 |
| 90% (late: most years have frozen by now) | Nov 14 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 13 | Oct 21 |
| 32°F (freeze) | Apr 2 | Oct 31 |
| 28°F (hard freeze) | Mar 23 | Nov 8 |
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 35673
Dates count from your average last spring frost (Apr 2) and first fall frost (Oct 31). 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 | Feb 5–19 | Apr 9–23 (transplant) | – |
| Pepper (sweet and hot) | Jan 22–Feb 5 | Apr 16–30 (transplant) | – |
| Eggplant | Jan 22–Feb 5 | Apr 16–30 (transplant) | – |
| Tomatillo | Feb 5–19 | Apr 9–23 (transplant) | – |
| Lettuce | Feb 5–19 | Mar 12–Apr 2 (transplant) Mar 5–Apr 16 (sow outdoors) | Sep 5–26 (transplant) Aug 22–Sep 19 (sowing) |
| Spinach | – | Feb 19–Mar 12 (sow outdoors) | Sep 5–26 (sowing) |
| Kale | Feb 5–19 | Mar 5–19 (transplant) Mar 5–19 (sow outdoors) | Aug 8–Sep 5 (transplant) Jul 25–Aug 22 (sowing) |
| Collards | Feb 5–19 | Mar 5–Apr 2 (transplant) Mar 5–Apr 2 (sow outdoors) | Aug 8–Sep 5 (transplant) Jul 25–Aug 22 (sowing) |
| Broccoli | Jan 22–Feb 5 | Mar 5–19 (transplant) | Jul 25–Aug 22 (transplant) |
| Cabbage | Jan 22–Feb 5 | Mar 5–19 (transplant) | Jul 25–Aug 22 (transplant) |
| Cauliflower | Jan 22–Feb 5 | Mar 19–Apr 2 (transplant) | Jul 25–Aug 22 (transplant) |
| Brussels sprouts | Jan 8–22 | Mar 5–19 (transplant) | Jul 11–Aug 1 (transplant) |
| Kohlrabi | Feb 5–19 | Mar 5–19 (transplant) Mar 5–19 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Bok choy / Asian greens | – | Mar 5–19 (sow outdoors) | Sep 5–19 (sowing) |
| Arugula | – | Mar 5–Apr 2 (sow outdoors) | Sep 5–Oct 3 (sowing) |
| Mustard greens | – | Mar 5–26 (sow outdoors) | Sep 5–19 (sowing) |
| Swiss chard | Feb 19–Mar 5 | Mar 19–Apr 9 (transplant) Mar 19–Apr 16 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Beet | – | Mar 5–Apr 2 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Carrot | – | Mar 12–Apr 9 (sow outdoors) | Aug 8–22 (sowing) |
| Radish | – | Feb 26–Apr 9 (sow outdoors) | Sep 19–Oct 3 (sowing) |
| Turnip | – | Mar 5–26 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Parsnip | – | Mar 12–Apr 2 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 5–Mar 5 (sow outdoors) | Aug 8–22 (sowing) |
| Onion (bulbing) | Jan 8–22 | Feb 19–Mar 5 (transplant) | – |
| Green onion / scallion | – | Feb 19–Mar 19 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Leek | Jan 8–22 | Mar 5–19 (transplant) | – |
| Garlic | – | – | Sep 19–Oct 17 (sowing) |
| Shallot | – | Feb 19–Mar 5 (transplant) | Sep 19–Oct 17 (sowing) |
| Potato | – | Mar 5–19 (transplant) | Jul 11–25 (transplant) |
| Sweet potato | – | Apr 23–May 7 (transplant) | – |
| Sweet corn | – | Apr 9–23 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 9–23 (sow outdoors) | – |
| Bean, pole | – | Apr 9–23 (sow outdoors) | – |
| Lima bean | – | Apr 16–30 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 23–May 14 (sow outdoors) | – |
| Cucumber | Mar 5–12 | Apr 9–23 (transplant) Apr 9–23 (sow outdoors) | – |
| Summer squash / zucchini | Mar 5–12 | Apr 9–23 (transplant) Apr 9–23 (sow outdoors) | – |
| Winter squash | Mar 5–12 | Apr 9–23 (transplant) Apr 9–23 (sow outdoors) | – |
| Pumpkin | – | Apr 9–23 (sow outdoors) | – |
| Watermelon | Mar 5–12 | Apr 16–30 (transplant) Apr 16–30 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 5–12 | Apr 16–30 (transplant) Apr 16–30 (sow outdoors) | – |
| Okra | Feb 19–Mar 5 | Apr 16–30 (transplant) Apr 16–30 (sow outdoors) | – |
| Celery | Jan 8–22 | Apr 9–16 (transplant) | – |
| Basil | Feb 19–Mar 5 | Apr 9–23 (transplant) Apr 9–23 (sow outdoors) | – |
| Cilantro | – | Mar 19–Apr 16 (sow outdoors) | Sep 5–19 (sowing) |
| Parsley | Jan 22–Feb 5 | Mar 19–Apr 2 (transplant) Mar 12–Apr 2 (sow outdoors) | – |
| Dill | – | Apr 2–16 (sow outdoors) | Sep 5–19 (sowing) |
| Sunflower | – | Apr 2–16 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 5–19 (transplant) | – |
| Rhubarb (crowns) | – | Mar 5–19 (transplant) | – |
| Strawberry (plants) | – | Mar 5–19 (transplant) | Aug 22–Sep 19 (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: Moulton 2, AL (NOAA GHCN-Daily ID USC00015635), elevation 622 ft, 11.4 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Decatur 4SE, AL | 12 mi | Mar 26 | Nov 7 |
| Decatur Pryor Fld, AL | 12 mi | Mar 27 | Nov 3 |
| Courtland 2 WSW, AL | 13 mi | Mar 28 | Nov 3 |
The average last-frost dates of these stations span 7 days, a rough guide to local variation. See data sources & methods.
Frost questions for 35673
When is the last frost in 35673?
The average (50% chance) last spring freeze of 32°F for ZIP 35673 is April 2. For a more cautious planting date, use April 18, when only 1 year in 10 still sees a later freeze.
When is the first frost in 35673?
The average first fall freeze is October 31. In 1 year in 10 it comes by October 18.
What hardiness zone is 35673?
ZIP 35673 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 35673 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
35643 Hillsboro 35601 Decatur 35603 Decatur 35618 Courtland 35671 Decatur 35611 Athens 35650 Moulton 35619
Other ZIP codes in Lawrence County
35618 35619 35643 35650 35651 35672 All Lawrence County frost dates · Alabama frost dates
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