Fall in zone 6aPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 64668 (Norborne, MO)
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, Carrollton, MO (12 miles away).
- Average last spring frostApr 1650% chance of a 32°F freeze after this date
- Average first fall frostOct 2350% chance of a 32°F freeze by this date
- Growing season (frost-free)187 daysmedian, 32°F threshold
- USDA hardiness zone6a-10 to -5°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
58°F 55°F or warmer
24-hour average · latest 56°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Powell Gardens (38 mi), Chillicothe 22 ENE (46 mi), Spickard (62 mi).
4-inch depth
62°F 55°F or warmer
24-hour average · latest 62°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Powell Gardens (38 mi), Chillicothe 22 ENE (46 mi), Spickard (62 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 64668 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 62°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: Transition zone. Timing only; always follow the product label.
- Bermudagrass (warm-season): Spring: Several weeks after the lawn is fully green (April–May) (about Jun 1 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
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 23: 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) | Apr 1 |
| 50% (the "average" last frost) | Apr 16 |
| 10% (cautious: only 1 year in 10 freezes later) | May 1 |
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 7 |
| 50% (the "average" first frost) | Oct 23 |
| 90% (late: most years have frozen by now) | Nov 3 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 27 | Oct 12 |
| 32°F (freeze) | Apr 16 | Oct 23 |
| 28°F (hard freeze) | Apr 4 | Nov 1 |
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 64668
Dates count from your average last spring frost (Apr 16) and first fall frost (Oct 23). 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 19–Mar 5 | Apr 23–May 7 (transplant) | – |
| Pepper (sweet and hot) | Feb 5–19 | Apr 30–May 14 (transplant) | – |
| Eggplant | Feb 5–19 | Apr 30–May 14 (transplant) | – |
| Tomatillo | Feb 19–Mar 5 | Apr 23–May 7 (transplant) | – |
| Lettuce | Feb 19–Mar 5 | Mar 26–Apr 16 (transplant) Mar 19–Apr 30 (sow outdoors) | Aug 28–Sep 18 (transplant) Aug 14–Sep 11 (sowing) |
| Spinach | – | Mar 5–26 (sow outdoors) | Aug 28–Sep 18 (sowing) |
| Kale | Feb 19–Mar 5 | Mar 19–Apr 2 (transplant) Mar 19–Apr 2 (sow outdoors) | Jul 31–Aug 28 (transplant) Jul 17–Aug 14 (sowing) |
| Collards | Feb 19–Mar 5 | Mar 19–Apr 16 (transplant) Mar 19–Apr 16 (sow outdoors) | Jul 31–Aug 28 (transplant) Jul 17–Aug 14 (sowing) |
| Broccoli | Feb 5–19 | Mar 19–Apr 2 (transplant) | Jul 17–Aug 14 (transplant) |
| Cabbage | Feb 5–19 | Mar 19–Apr 2 (transplant) | Jul 17–Aug 14 (transplant) |
| Cauliflower | Feb 5–19 | Apr 2–16 (transplant) | Jul 17–Aug 14 (transplant) |
| Brussels sprouts | Jan 22–Feb 5 | Mar 19–Apr 2 (transplant) | Jul 3–24 (transplant) |
| Kohlrabi | Feb 19–Mar 5 | Mar 19–Apr 2 (transplant) Mar 19–Apr 2 (sow outdoors) | Aug 14–28 (sowing) |
| Bok choy / Asian greens | – | Mar 19–Apr 2 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Arugula | – | Mar 19–Apr 16 (sow outdoors) | Aug 28–Sep 25 (sowing) |
| Mustard greens | – | Mar 19–Apr 9 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Swiss chard | Mar 5–19 | Apr 2–23 (transplant) Apr 2–30 (sow outdoors) | Aug 14–28 (sowing) |
| Beet | – | Mar 19–Apr 16 (sow outdoors) | Aug 14–28 (sowing) |
| Carrot | – | Mar 26–Apr 23 (sow outdoors) | Jul 31–Aug 14 (sowing) |
| Radish | – | Mar 12–Apr 23 (sow outdoors) | Sep 11–25 (sowing) |
| Turnip | – | Mar 19–Apr 9 (sow outdoors) | Aug 14–28 (sowing) |
| Parsnip | – | Mar 26–Apr 16 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 19–Mar 19 (sow outdoors) | Jul 31–Aug 14 (sowing) |
| Onion (bulbing) | Jan 22–Feb 5 | Mar 5–19 (transplant) | – |
| Green onion / scallion | – | Mar 5–Apr 2 (sow outdoors) | Aug 14–28 (sowing) |
| Leek | Jan 22–Feb 5 | Mar 19–Apr 2 (transplant) | – |
| Garlic | – | – | Sep 11–Oct 9 (sowing) |
| Shallot | – | Mar 5–19 (transplant) | Sep 11–Oct 9 (sowing) |
| Potato | – | Mar 19–Apr 2 (transplant) | Jul 3–17 (transplant) |
| Sweet potato | – | May 7–21 (transplant) | – |
| Sweet corn | – | Apr 23–May 7 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 23–May 7 (sow outdoors) | – |
| Bean, pole | – | Apr 23–May 7 (sow outdoors) | – |
| Lima bean | – | Apr 30–May 14 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 7–28 (sow outdoors) | – |
| Cucumber | Mar 19–26 | Apr 23–May 7 (transplant) Apr 23–May 7 (sow outdoors) | – |
| Summer squash / zucchini | Mar 19–26 | Apr 23–May 7 (transplant) Apr 23–May 7 (sow outdoors) | – |
| Winter squash | Mar 19–26 | Apr 23–May 7 (transplant) Apr 23–May 7 (sow outdoors) | – |
| Pumpkin | – | Apr 23–May 7 (sow outdoors) | – |
| Watermelon | Mar 19–26 | Apr 30–May 14 (transplant) Apr 30–May 14 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 19–26 | Apr 30–May 14 (transplant) Apr 30–May 14 (sow outdoors) | – |
| Okra | Mar 5–19 | Apr 30–May 14 (transplant) Apr 30–May 14 (sow outdoors) | – |
| Celery | Jan 22–Feb 5 | Apr 23–30 (transplant) | – |
| Basil | Mar 5–19 | Apr 23–May 7 (transplant) Apr 23–May 7 (sow outdoors) | – |
| Cilantro | – | Apr 2–30 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Parsley | Feb 5–19 | Apr 2–16 (transplant) Mar 26–Apr 16 (sow outdoors) | – |
| Dill | – | Apr 16–30 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Sunflower | – | Apr 16–30 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 19–Apr 2 (transplant) | – |
| Rhubarb (crowns) | – | Mar 19–Apr 2 (transplant) | – |
| Strawberry (plants) | – | Mar 19–Apr 2 (transplant) | Aug 14–Sep 11 (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
Missouri has a university or garden plant program: Plants of Merit. Plant frost-tender annuals after April 16 here (the average last frost). Not affiliated with the program.
Where these numbers come from
Station: Carrollton, MO (NOAA GHCN-Daily ID USC00231340), elevation 705 ft, 11.6 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Waverly, MO | 14 mi | Apr 6 | Oct 30 |
| Lexington 3E, MO | 14 mi | Apr 8 | Oct 25 |
| Richmond 3S, MO | 16 mi | Apr 19 | Oct 18 |
The average last-frost dates of these stations span 13 days, a rough guide to local variation. See data sources & methods.
Frost questions for 64668
When is the last frost in 64668?
The average (50% chance) last spring freeze of 32°F for ZIP 64668 is April 16. For a more cautious planting date, use May 1, when only 1 year in 10 still sees a later freeze.
When is the first frost in 64668?
The average first fall freeze is October 23. In 1 year in 10 it comes by October 7.
What hardiness zone is 64668?
ZIP 64668 is in USDA zone 6a (-10 to -5°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 64668 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
64035 Hardin 64022 Dover 64633 Carrollton 64622 Bogard 64085 Richmond 64096 Waverly 64067 Lexington 64624 Braymer
Other ZIP codes in Carroll County
64622 64623 64633 64639 64643 64682 All Carroll County frost dates · Missouri frost dates
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