Fall in zone 9bPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 89005 (Boulder City, NV)
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, Alan Bible Visitor Ctr, NV (3 miles away).
- Average last spring frostJan 2150% chance of a 32°F freeze after this date
- Average first fall frostDec 1750% chance of a 32°F freeze by this date
- Growing season (frost-free)328 daysmedian, 32°F threshold
- USDA hardiness zone9b25 to 30°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
50°F 50–55°F
24-hour average · latest 50°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Lovell Summit (44 mi), Pine Nut (44 mi), Kyle Canyon (46 mi).
4-inch depth
50°F 50–55°F
24-hour average · latest 51°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Lovell Summit (44 mi), Pine Nut (44 mi), Kyle Canyon (46 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 89005 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 50°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent window is mostly past. Next: spring, when soil reaches 50°F (typically late January to February).
Fertilizer window
Lawn region: Arid Southwest (low desert). Timing only; always follow the product label.
- Bermudagrass (warm-season): Spring: Several weeks after the lawn is fully green (April–May) (about Mar 8 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).
- Perennial ryegrass (cool-season): Early fall: September; Late fall: October–November; Overseeded Bermuda: Light feeding once the winter rye is established, if needed. Avoid: Summer feeding.
Plant now
- Lettuce: fall sowing Oct 8–Nov 5
- Kale: fall transplant Sep 24–Oct 22
- Collards: fall transplant Sep 24–Oct 22
- Kohlrabi: fall sowing Oct 8–22
- Swiss chard: fall sowing Oct 8–22
- Beet: fall sowing Oct 8–22
- Turnip: fall sowing Oct 8–22
- Green onion / scallion: fall sowing Oct 8–22
- Strawberry (plants): fall transplant Oct 8–Nov 5
Coming up in the next 3 weeks
- Lettuce: fall transplant Oct 22–Nov 12
- Spinach: fall sowing Oct 22–Nov 12
- Brussels sprouts: start seeds indoors Oct 29–Nov 12
- Bok choy / Asian greens: fall sowing Oct 22–Nov 5
- Arugula: fall sowing Oct 22–Nov 19
- Mustard greens: fall sowing Oct 22–Nov 5
- Radish: fall sowing Nov 5–19
- Onion (bulbing): start seeds indoors Oct 29–Nov 12
- Leek: start seeds indoors Oct 29–Nov 12
- Garlic: fall sowing Nov 5–Dec 3
- Shallot: fall sowing Nov 5–Dec 3
- Celery: start seeds indoors Oct 29–Nov 12
Prune now
No frost-timed pruning windows are open this week.
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) | Dec 29 (prior Dec) |
| 50% (the "average" last frost) | Jan 21 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 5 |
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) | Dec 2 |
| 50% (the "average" first frost) | Dec 17 |
| 90% (late: most years have frozen by now) | Jan 3 (next year) |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Feb 13 | Dec 5 |
| 32°F (freeze) | Jan 21 | Dec 17 |
| 28°F (hard freeze) | Jan 10 | Dec 30 |
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 89005
Dates count from your average last spring frost (Jan 21) and first fall frost (Dec 17). 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 | Nov 26–Dec 10 | Jan 28–Feb 11 (transplant) | Aug 20–Sep 17 (transplant) |
| Pepper (sweet and hot) | Nov 12–26 | Feb 4–18 (transplant) | Aug 27–Sep 17 (transplant) |
| Eggplant | Nov 12–26 | Feb 4–18 (transplant) | Aug 27–Sep 17 (transplant) |
| Tomatillo | Nov 26–Dec 10 | Jan 28–Feb 11 (transplant) | – |
| Lettuce | Nov 26–Dec 10 | Dec 31–Jan 21 (transplant) Dec 24–Feb 4 (sow outdoors) | Oct 22–Nov 12 (transplant) Oct 8–Nov 5 (sowing) |
| Spinach | – | Dec 10–31 (sow outdoors) | Oct 22–Nov 12 (sowing) |
| Kale | Nov 26–Dec 10 | Dec 24–Jan 7 (transplant) Dec 24–Jan 7 (sow outdoors) | Sep 24–Oct 22 (transplant) Sep 10–Oct 8 (sowing) |
| Collards | Nov 26–Dec 10 | Dec 24–Jan 21 (transplant) Dec 24–Jan 21 (sow outdoors) | Sep 24–Oct 22 (transplant) Sep 10–Oct 8 (sowing) |
| Broccoli | Nov 12–26 | Dec 24–Jan 7 (transplant) | Sep 10–Oct 8 (transplant) |
| Cabbage | Nov 12–26 | Dec 24–Jan 7 (transplant) | Sep 10–Oct 8 (transplant) |
| Cauliflower | Nov 12–26 | Jan 7–21 (transplant) | Sep 10–Oct 8 (transplant) |
| Brussels sprouts | Oct 29–Nov 12 | Dec 24–Jan 7 (transplant) | Aug 27–Sep 17 (transplant) |
| Kohlrabi | Nov 26–Dec 10 | Dec 24–Jan 7 (transplant) Dec 24–Jan 7 (sow outdoors) | Oct 8–22 (sowing) |
| Bok choy / Asian greens | – | Dec 24–Jan 7 (sow outdoors) | Oct 22–Nov 5 (sowing) |
| Arugula | – | Dec 24–Jan 21 (sow outdoors) | Oct 22–Nov 19 (sowing) |
| Mustard greens | – | Dec 24–Jan 14 (sow outdoors) | Oct 22–Nov 5 (sowing) |
| Swiss chard | Dec 10–24 | Jan 7–28 (transplant) Jan 7–Feb 4 (sow outdoors) | Oct 8–22 (sowing) |
| Beet | – | Dec 24–Jan 21 (sow outdoors) | Oct 8–22 (sowing) |
| Carrot | – | Dec 31–Jan 28 (sow outdoors) | Sep 24–Oct 8 (sowing) |
| Radish | – | Dec 17–Jan 28 (sow outdoors) | Nov 5–19 (sowing) |
| Turnip | – | Dec 24–Jan 14 (sow outdoors) | Oct 8–22 (sowing) |
| Parsnip | – | Dec 31–Jan 21 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Nov 26–Dec 24 (sow outdoors) | Sep 24–Oct 8 (sowing) |
| Onion (bulbing) | Oct 29–Nov 12 | Dec 10–24 (transplant) | – |
| Green onion / scallion | – | Dec 10–Jan 7 (sow outdoors) | Oct 8–22 (sowing) |
| Leek | Oct 29–Nov 12 | Dec 24–Jan 7 (transplant) | – |
| Garlic | – | – | Nov 5–Dec 3 (sowing) |
| Shallot | – | Dec 10–24 (transplant) | Nov 5–Dec 3 (sowing) |
| Potato | – | Dec 24–Jan 7 (transplant) | Aug 27–Sep 10 (transplant) |
| Sweet potato | – | Feb 11–25 (transplant) | – |
| Sweet corn | – | Jan 28–Feb 11 (sow outdoors) | – |
| Bean, bush (snap) | – | Jan 28–Feb 11 (sow outdoors) | Sep 24–Oct 8 (sowing) |
| Bean, pole | – | Jan 28–Feb 11 (sow outdoors) | – |
| Lima bean | – | Feb 4–18 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Feb 11–Mar 4 (sow outdoors) | – |
| Cucumber | Dec 24–31 | Jan 28–Feb 11 (transplant) Jan 28–Feb 11 (sow outdoors) | Sep 24–Oct 8 (sowing) |
| Summer squash / zucchini | Dec 24–31 | Jan 28–Feb 11 (transplant) Jan 28–Feb 11 (sow outdoors) | Sep 24–Oct 8 (sowing) |
| Winter squash | Dec 24–31 | Jan 28–Feb 11 (transplant) Jan 28–Feb 11 (sow outdoors) | – |
| Pumpkin | – | Jan 28–Feb 11 (sow outdoors) | – |
| Watermelon | Dec 24–31 | Feb 4–18 (transplant) Feb 4–18 (sow outdoors) | – |
| Cantaloupe / muskmelon | Dec 24–31 | Feb 4–18 (transplant) Feb 4–18 (sow outdoors) | – |
| Okra | Dec 10–24 | Feb 4–18 (transplant) Feb 4–18 (sow outdoors) | – |
| Celery | Oct 29–Nov 12 | Jan 28–Feb 4 (transplant) | – |
| Basil | Dec 10–24 | Jan 28–Feb 11 (transplant) Jan 28–Feb 11 (sow outdoors) | – |
| Cilantro | – | Jan 7–Feb 4 (sow outdoors) | Oct 22–Nov 5 (sowing) |
| Parsley | Nov 12–26 | Jan 7–21 (transplant) Dec 31–Jan 21 (sow outdoors) | – |
| Dill | – | Jan 21–Feb 4 (sow outdoors) | Oct 22–Nov 5 (sowing) |
| Sunflower | – | Jan 21–Feb 4 (sow outdoors) | – |
| Asparagus (crowns) | – | Dec 24–Jan 7 (transplant) | – |
| Rhubarb (crowns) | – | Dec 24–Jan 7 (transplant) | – |
| Strawberry (plants) | – | Dec 24–Jan 7 (transplant) | Oct 8–Nov 5 (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: Alan Bible Visitor Ctr, NV (NOAA GHCN-Daily ID USC00260125), elevation 1,641 ft, 3.2 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Callville Bay, NV | 12 mi | Jan 31 | Dec 11 |
| Willow Beach, AZ | 14 mi | Jan 7 | Dec 29 |
| Las Vegas Mccarran AP, NV | 18 mi | Jan 20 | Dec 15 |
The average last-frost dates of these stations span 24 days, a rough guide to local variation. See data sources & methods.
Frost questions for 89005
When is the last frost in 89005?
The average (50% chance) last spring freeze of 32°F for ZIP 89005 is January 21. For a more cautious planting date, use March 5, when only 1 year in 10 still sees a later freeze.
When is the first frost in 89005?
The average first fall freeze is December 17. In 1 year in 10 it comes by December 2.
What hardiness zone is 89005?
ZIP 89005 is in USDA zone 9b (25 to 30°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 89005 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
89015 Henderson 89002 Henderson 89011 Henderson 89012 Henderson 89044 Henderson 89014 Henderson 89122 Whitney 89074 Henderson
Other ZIP codes in Clark County
89002 89004 89007 89011 89012 89014 89015 89018 89019 89021 89025 89026 89027 89029 89030 89031 89032 89034 89039 89040 89044 89046 89052 89054 All Clark County frost dates · Nevada 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.