Fall in zone 8aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 86411 (Hackberry, AZ)
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, Kingman Mohave Co AP, AZ (17 miles away).
- Average last spring frostApr 250% chance of a 32°F freeze after this date
- Average first fall frostNov 1150% chance of a 32°F freeze by this date
- Growing season (frost-free)220 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
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 86411 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 mid-April to mid-May.
Fertilizer window
Lawn region: Mountain West and High Plains. Timing only; always follow the product label.
- Kentucky bluegrass (cool-season): Early fall: Around Labor Day (late August–September); Late fall: Late October–November, before the ground freezes; Late spring: Optional around Memorial Day. Avoid: Early-spring and midsummer feeding (pushes top growth, favors crabgrass).
Plant now
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 11: 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 8 |
| 50% (the "average" last frost) | Apr 2 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 21 |
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 26 |
| 50% (the "average" first frost) | Nov 11 |
| 90% (late: most years have frozen by now) | Nov 24 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 20 | Oct 31 |
| 32°F (freeze) | Apr 2 | Nov 11 |
| 28°F (hard freeze) | Mar 6 | Nov 22 |
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 86411
Dates count from your average last spring frost (Apr 2) and first fall frost (Nov 11). 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) | Jul 15–Aug 12 (transplant) |
| Pepper (sweet and hot) | Jan 22–Feb 5 | Apr 16–30 (transplant) | Jul 22–Aug 12 (transplant) |
| Eggplant | Jan 22–Feb 5 | Apr 16–30 (transplant) | Jul 22–Aug 12 (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 16–Oct 7 (transplant) Sep 2–30 (sowing) |
| Spinach | – | Feb 19–Mar 12 (sow outdoors) | Sep 16–Oct 7 (sowing) |
| Kale | Feb 5–19 | Mar 5–19 (transplant) Mar 5–19 (sow outdoors) | Aug 19–Sep 16 (transplant) Aug 5–Sep 2 (sowing) |
| Collards | Feb 5–19 | Mar 5–Apr 2 (transplant) Mar 5–Apr 2 (sow outdoors) | Aug 19–Sep 16 (transplant) Aug 5–Sep 2 (sowing) |
| Broccoli | Jan 22–Feb 5 | Mar 5–19 (transplant) | Aug 5–Sep 2 (transplant) |
| Cabbage | Jan 22–Feb 5 | Mar 5–19 (transplant) | Aug 5–Sep 2 (transplant) |
| Cauliflower | Jan 22–Feb 5 | Mar 19–Apr 2 (transplant) | Aug 5–Sep 2 (transplant) |
| Brussels sprouts | Jan 8–22 | Mar 5–19 (transplant) | Jul 22–Aug 12 (transplant) |
| Kohlrabi | Feb 5–19 | Mar 5–19 (transplant) Mar 5–19 (sow outdoors) | Sep 2–16 (sowing) |
| Bok choy / Asian greens | – | Mar 5–19 (sow outdoors) | Sep 16–30 (sowing) |
| Arugula | – | Mar 5–Apr 2 (sow outdoors) | Sep 16–Oct 14 (sowing) |
| Mustard greens | – | Mar 5–26 (sow outdoors) | Sep 16–30 (sowing) |
| Swiss chard | Feb 19–Mar 5 | Mar 19–Apr 9 (transplant) Mar 19–Apr 16 (sow outdoors) | Sep 2–16 (sowing) |
| Beet | – | Mar 5–Apr 2 (sow outdoors) | Sep 2–16 (sowing) |
| Carrot | – | Mar 12–Apr 9 (sow outdoors) | Aug 19–Sep 2 (sowing) |
| Radish | – | Feb 26–Apr 9 (sow outdoors) | Sep 30–Oct 14 (sowing) |
| Turnip | – | Mar 5–26 (sow outdoors) | Sep 2–16 (sowing) |
| Parsnip | – | Mar 12–Apr 2 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 5–Mar 5 (sow outdoors) | Aug 19–Sep 2 (sowing) |
| Onion (bulbing) | Jan 8–22 | Feb 19–Mar 5 (transplant) | – |
| Green onion / scallion | – | Feb 19–Mar 19 (sow outdoors) | Sep 2–16 (sowing) |
| Leek | Jan 8–22 | Mar 5–19 (transplant) | – |
| Garlic | – | – | Sep 30–Oct 28 (sowing) |
| Shallot | – | Feb 19–Mar 5 (transplant) | Sep 30–Oct 28 (sowing) |
| Potato | – | Mar 5–19 (transplant) | Jul 22–Aug 5 (transplant) |
| Sweet potato | – | Apr 23–May 7 (transplant) | – |
| Sweet corn | – | Apr 9–23 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 9–23 (sow outdoors) | Aug 19–Sep 2 (sowing) |
| 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) | Aug 19–Sep 2 (sowing) |
| Summer squash / zucchini | Mar 5–12 | Apr 9–23 (transplant) Apr 9–23 (sow outdoors) | Aug 19–Sep 2 (sowing) |
| 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 16–30 (sowing) |
| Parsley | Jan 22–Feb 5 | Mar 19–Apr 2 (transplant) Mar 12–Apr 2 (sow outdoors) | – |
| Dill | – | Apr 2–16 (sow outdoors) | Sep 16–30 (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) | Sep 2–30 (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: Kingman Mohave Co AP, AZ (NOAA GHCN-Daily ID USW00093167), elevation 3,420 ft, 16.9 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Diamond M Rch, AZ | 24 mi | May 17 | Oct 10 |
| Meadview 1W, AZ | 43 mi | Mar 5 | Nov 28 |
| Yucca 1 NNE, AZ | 45 mi | Feb 18 | Dec 2 |
The average last-frost dates of these stations span 92 days, a rough guide to local variation. See data sources & methods.
Frost questions for 86411
When is the last frost in 86411?
The average (50% chance) last spring freeze of 32°F for ZIP 86411 is April 2. For a more cautious planting date, use April 21, when only 1 year in 10 still sees a later freeze.
When is the first frost in 86411?
The average first fall freeze is November 11. In 1 year in 10 it comes by October 26.
What hardiness zone is 86411?
ZIP 86411 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 86411 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
86437 Valentine 86409 New Kingman-Butler 86434 Grand Canyon West 86401 Kingman 86431 Chloride 86441 Dolan Springs 86413 Golden Valley 86444 Meadview
Other ZIP codes in Mohave County
85360 86021 86401 86403 86404 86406 86409 86413 86426 86429 86431 86432 86433 86434 86436 86437 86438 86440 86441 86442 86443 86444 86445 All Mohave County frost dates · Arizona frost dates
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Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- Freeze alerts
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- Weekly yard to-dos
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.