Fall in zone 9bPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 85334 (Ehrenberg, 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, Ehrenberg 2 E, AZ (6 miles away).
Freezes are uncommon here
NOAA's normals for this station show a 32°F night in about 83% of years (about 2 freezing night(s) a year on average). The dates below describe freeze timing for the station's record; in many years there may be no 32°F freeze at all.
- Average last spring frostJan 450% chance of a 32°F freeze after this date
- Average first fall frostDec 1950% chance of a 32°F freeze by this date
- Growing season (frost-free)347 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
Freezes are uncommon here, so frost-based timing is rough. Local extension calendars for frost-free areas use months.
Soil temperature now
2-inch depth
79°F 55°F or warmer
24-hour average · latest 74°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Ford Dry Lake (42 mi), Yuma 27 ENE (53 mi), Desert Center (56 mi).
4-inch depth
81°F 55°F or warmer
24-hour average · latest 78°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Ford Dry Lake (42 mi), Yuma 27 ENE (53 mi), Desert Center (56 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 85334 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 81°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent (annual bluegrass, winter weeds): not yet. Apply as soil cools toward 70°F (typically September to October).
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 Feb 19 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 10–Nov 7
- Kale: fall transplant Sep 26–Oct 24
- Collards: fall transplant Sep 26–Oct 24
- Brussels sprouts: start seeds indoors Oct 12–26
- Kohlrabi: fall sowing Oct 10–24
- Swiss chard: fall sowing Oct 10–24
- Beet: fall sowing Oct 10–24
- Turnip: fall sowing Oct 10–24
- Onion (bulbing): start seeds indoors Oct 12–26
- Green onion / scallion: fall sowing Oct 10–24
- Leek: start seeds indoors Oct 12–26
- Celery: start seeds indoors Oct 12–26
- Strawberry (plants): fall transplant Oct 10–Nov 7
Coming up in the next 3 weeks
- Pepper (sweet and hot): start seeds indoors Oct 26–Nov 9
- Eggplant: start seeds indoors Oct 26–Nov 9
- Lettuce: fall transplant Oct 24–Nov 14
- Spinach: fall sowing Oct 24–Nov 14
- Broccoli: start seeds indoors Oct 26–Nov 9
- Cabbage: start seeds indoors Oct 26–Nov 9
- Cauliflower: start seeds indoors Oct 26–Nov 9
- Bok choy / Asian greens: fall sowing Oct 24–Nov 7
- Arugula: fall sowing Oct 24–Nov 21
- Mustard greens: fall sowing Oct 24–Nov 7
- Radish: fall sowing Nov 7–21
- Garlic: fall sowing Nov 7–Dec 5
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 16 (prior Dec) |
| 50% (the "average" last frost) | Jan 4 |
| 10% (cautious: only 1 year in 10 freezes later) | Feb 10 |
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 5 |
| 50% (the "average" first frost) | Dec 19 |
| 90% (late: most years have frozen by now) | Jan 5 (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 3 | Dec 7 |
| 32°F (freeze) | Jan 4 | Dec 19 |
| 28°F (hard freeze) | Dec 29 (prior Dec) | Dec 26 |
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 85334
Dates count from your average last spring frost (Jan 4) and first fall frost (Dec 19). 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 9–23 | Jan 11–25 (transplant) | Aug 22–Sep 19 (transplant) |
| Pepper (sweet and hot) | Oct 26–Nov 9 | Jan 18–Feb 1 (transplant) | Aug 29–Sep 19 (transplant) |
| Eggplant | Oct 26–Nov 9 | Jan 18–Feb 1 (transplant) | Aug 29–Sep 19 (transplant) |
| Tomatillo | Nov 9–23 | Jan 11–25 (transplant) | – |
| Lettuce | Nov 9–23 | Dec 14–Jan 4 (transplant) Dec 7–Jan 18 (sow outdoors) | Oct 24–Nov 14 (transplant) Oct 10–Nov 7 (sowing) |
| Spinach | – | Nov 23–Dec 14 (sow outdoors) | Oct 24–Nov 14 (sowing) |
| Kale | Nov 9–23 | Dec 7–21 (transplant) Dec 7–21 (sow outdoors) | Sep 26–Oct 24 (transplant) Sep 12–Oct 10 (sowing) |
| Collards | Nov 9–23 | Dec 7–Jan 4 (transplant) Dec 7–Jan 4 (sow outdoors) | Sep 26–Oct 24 (transplant) Sep 12–Oct 10 (sowing) |
| Broccoli | Oct 26–Nov 9 | Dec 7–21 (transplant) | Sep 12–Oct 10 (transplant) |
| Cabbage | Oct 26–Nov 9 | Dec 7–21 (transplant) | Sep 12–Oct 10 (transplant) |
| Cauliflower | Oct 26–Nov 9 | Dec 21–Jan 4 (transplant) | Sep 12–Oct 10 (transplant) |
| Brussels sprouts | Oct 12–26 | Dec 7–21 (transplant) | Aug 29–Sep 19 (transplant) |
| Kohlrabi | Nov 9–23 | Dec 7–21 (transplant) Dec 7–21 (sow outdoors) | Oct 10–24 (sowing) |
| Bok choy / Asian greens | – | Dec 7–21 (sow outdoors) | Oct 24–Nov 7 (sowing) |
| Arugula | – | Dec 7–Jan 4 (sow outdoors) | Oct 24–Nov 21 (sowing) |
| Mustard greens | – | Dec 7–28 (sow outdoors) | Oct 24–Nov 7 (sowing) |
| Swiss chard | Nov 23–Dec 7 | Dec 21–Jan 11 (transplant) Dec 21–Jan 18 (sow outdoors) | Oct 10–24 (sowing) |
| Beet | – | Dec 7–Jan 4 (sow outdoors) | Oct 10–24 (sowing) |
| Carrot | – | Dec 14–Jan 11 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Radish | – | Nov 30–Jan 11 (sow outdoors) | Nov 7–21 (sowing) |
| Turnip | – | Dec 7–28 (sow outdoors) | Oct 10–24 (sowing) |
| Parsnip | – | Dec 14–Jan 4 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Nov 9–Dec 7 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Onion (bulbing) | Oct 12–26 | Nov 23–Dec 7 (transplant) | – |
| Green onion / scallion | – | Nov 23–Dec 21 (sow outdoors) | Oct 10–24 (sowing) |
| Leek | Oct 12–26 | Dec 7–21 (transplant) | – |
| Garlic | – | – | Nov 7–Dec 5 (sowing) |
| Shallot | – | Nov 23–Dec 7 (transplant) | Nov 7–Dec 5 (sowing) |
| Potato | – | Dec 7–21 (transplant) | Aug 29–Sep 12 (transplant) |
| Sweet potato | – | Jan 25–Feb 8 (transplant) | – |
| Sweet corn | – | Jan 11–25 (sow outdoors) | – |
| Bean, bush (snap) | – | Jan 11–25 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Bean, pole | – | Jan 11–25 (sow outdoors) | – |
| Lima bean | – | Jan 18–Feb 1 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jan 25–Feb 15 (sow outdoors) | – |
| Cucumber | Dec 7–14 | Jan 11–25 (transplant) Jan 11–25 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Summer squash / zucchini | Dec 7–14 | Jan 11–25 (transplant) Jan 11–25 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Winter squash | Dec 7–14 | Jan 11–25 (transplant) Jan 11–25 (sow outdoors) | – |
| Pumpkin | – | Jan 11–25 (sow outdoors) | – |
| Watermelon | Dec 7–14 | Jan 18–Feb 1 (transplant) Jan 18–Feb 1 (sow outdoors) | – |
| Cantaloupe / muskmelon | Dec 7–14 | Jan 18–Feb 1 (transplant) Jan 18–Feb 1 (sow outdoors) | – |
| Okra | Nov 23–Dec 7 | Jan 18–Feb 1 (transplant) Jan 18–Feb 1 (sow outdoors) | – |
| Celery | Oct 12–26 | Jan 11–18 (transplant) | – |
| Basil | Nov 23–Dec 7 | Jan 11–25 (transplant) Jan 11–25 (sow outdoors) | – |
| Cilantro | – | Dec 21–Jan 18 (sow outdoors) | Oct 24–Nov 7 (sowing) |
| Parsley | Oct 26–Nov 9 | Dec 21–Jan 4 (transplant) Dec 14–Jan 4 (sow outdoors) | – |
| Dill | – | Jan 4–18 (sow outdoors) | Oct 24–Nov 7 (sowing) |
| Sunflower | – | Jan 4–18 (sow outdoors) | – |
| Asparagus (crowns) | – | Dec 7–21 (transplant) | – |
| Rhubarb (crowns) | – | Dec 7–21 (transplant) | – |
| Strawberry (plants) | – | Dec 7–21 (transplant) | Oct 10–Nov 7 (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: Ehrenberg 2 E, AZ (NOAA GHCN-Daily ID USC00022790), elevation 465 ft, 6.3 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Quartzsite, AZ | 9 mi | Jan 28 | Dec 6 |
| Blythe, CA | 14 mi | Jan 25 | Dec 12 |
| Blythe AP, CA | 20 mi | Jan 5 | Dec 21 |
The average last-frost dates of these stations span 24 days, a rough guide to local variation. See data sources & methods.
Frost questions for 85334
When is the last frost in 85334?
The average (50% chance) last spring freeze of 32°F for ZIP 85334 is January 4. For a more cautious planting date, use February 10, when only 1 year in 10 still sees a later freeze.
When is the first frost in 85334?
The average first fall freeze is December 19. In 1 year in 10 it comes by December 5.
What hardiness zone is 85334?
ZIP 85334 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 85334 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
85346 Quartzsite 92225 Blythe 85344 Parker 85371 Poston 85328 Cibola 85325 Bouse 85348 Vicksburg 92242 Big River
Other ZIP codes in La Paz County
85325 85328 85344 85346 85348 85357 85371 All La Paz County frost dates · Arizona frost dates
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