Fall in zone 9bPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 85352 (Tacna, 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, Tacna 3 NE, AZ (3 miles away).
- Average last spring frostFeb 1350% chance of a 32°F freeze after this date
- Average first fall frostDec 150% chance of a 32°F freeze by this date
- Growing season (frost-free)288 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
81°F 55°F or warmer
24-hour average · latest 77°F, as of Oct 18, 1:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Yuma 27 ENE (20 mi).
4-inch depth
84°F 55°F or warmer
24-hour average · latest 84°F, as of Oct 18, 1:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Yuma 27 ENE (20 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 85352 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 84°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 Mar 31 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 Sep 22–Oct 20
- Lettuce: fall transplant Oct 6–27
- Spinach: fall sowing Oct 6–27
- Bok choy / Asian greens: fall sowing Oct 6–20
- Arugula: fall sowing Oct 6–Nov 3
- Mustard greens: fall sowing Oct 6–20
- Cilantro: fall sowing Oct 6–20
- Dill: fall sowing Oct 6–20
- Strawberry (plants): fall transplant Sep 22–Oct 20
Coming up in the next 3 weeks
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Dec 1: 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) | Jan 19 |
| 50% (the "average" last frost) | Feb 13 |
| 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) | Nov 14 |
| 50% (the "average" first frost) | Dec 1 |
| 90% (late: most years have frozen by now) | Dec 17 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 2 | Nov 19 |
| 32°F (freeze) | Feb 13 | Dec 1 |
| 28°F (hard freeze) | Jan 23 | Dec 11 |
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 85352
Dates count from your average last spring frost (Feb 13) and first fall frost (Dec 1). 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 | Dec 19–Jan 2 | Feb 20–Mar 6 (transplant) | Aug 4–Sep 1 (transplant) |
| Pepper (sweet and hot) | Dec 5–19 | Feb 27–Mar 13 (transplant) | Aug 11–Sep 1 (transplant) |
| Eggplant | Dec 5–19 | Feb 27–Mar 13 (transplant) | Aug 11–Sep 1 (transplant) |
| Tomatillo | Dec 19–Jan 2 | Feb 20–Mar 6 (transplant) | – |
| Lettuce | Dec 19–Jan 2 | Jan 23–Feb 13 (transplant) Jan 16–Feb 27 (sow outdoors) | Oct 6–27 (transplant) Sep 22–Oct 20 (sowing) |
| Spinach | – | Jan 2–23 (sow outdoors) | Oct 6–27 (sowing) |
| Kale | Dec 19–Jan 2 | Jan 16–30 (transplant) Jan 16–30 (sow outdoors) | Sep 8–Oct 6 (transplant) Aug 25–Sep 22 (sowing) |
| Collards | Dec 19–Jan 2 | Jan 16–Feb 13 (transplant) Jan 16–Feb 13 (sow outdoors) | Sep 8–Oct 6 (transplant) Aug 25–Sep 22 (sowing) |
| Broccoli | Dec 5–19 | Jan 16–30 (transplant) | Aug 25–Sep 22 (transplant) |
| Cabbage | Dec 5–19 | Jan 16–30 (transplant) | Aug 25–Sep 22 (transplant) |
| Cauliflower | Dec 5–19 | Jan 30–Feb 13 (transplant) | Aug 25–Sep 22 (transplant) |
| Brussels sprouts | Nov 21–Dec 5 | Jan 16–30 (transplant) | Aug 11–Sep 1 (transplant) |
| Kohlrabi | Dec 19–Jan 2 | Jan 16–30 (transplant) Jan 16–30 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Bok choy / Asian greens | – | Jan 16–30 (sow outdoors) | Oct 6–20 (sowing) |
| Arugula | – | Jan 16–Feb 13 (sow outdoors) | Oct 6–Nov 3 (sowing) |
| Mustard greens | – | Jan 16–Feb 6 (sow outdoors) | Oct 6–20 (sowing) |
| Swiss chard | Jan 2–16 | Jan 30–Feb 20 (transplant) Jan 30–Feb 27 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Beet | – | Jan 16–Feb 13 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Carrot | – | Jan 23–Feb 20 (sow outdoors) | Sep 8–22 (sowing) |
| Radish | – | Jan 9–Feb 20 (sow outdoors) | Oct 20–Nov 3 (sowing) |
| Turnip | – | Jan 16–Feb 6 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Parsnip | – | Jan 23–Feb 13 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Dec 19–Jan 16 (sow outdoors) | Sep 8–22 (sowing) |
| Onion (bulbing) | Nov 21–Dec 5 | Jan 2–16 (transplant) | – |
| Green onion / scallion | – | Jan 2–30 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Leek | Nov 21–Dec 5 | Jan 16–30 (transplant) | – |
| Garlic | – | – | Oct 20–Nov 17 (sowing) |
| Shallot | – | Jan 2–16 (transplant) | Oct 20–Nov 17 (sowing) |
| Potato | – | Jan 16–30 (transplant) | Aug 11–25 (transplant) |
| Sweet potato | – | Mar 6–20 (transplant) | – |
| Sweet corn | – | Feb 20–Mar 6 (sow outdoors) | – |
| Bean, bush (snap) | – | Feb 20–Mar 6 (sow outdoors) | Sep 8–22 (sowing) |
| Bean, pole | – | Feb 20–Mar 6 (sow outdoors) | – |
| Lima bean | – | Feb 27–Mar 13 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 6–27 (sow outdoors) | – |
| Cucumber | Jan 16–23 | Feb 20–Mar 6 (transplant) Feb 20–Mar 6 (sow outdoors) | Sep 8–22 (sowing) |
| Summer squash / zucchini | Jan 16–23 | Feb 20–Mar 6 (transplant) Feb 20–Mar 6 (sow outdoors) | Sep 8–22 (sowing) |
| Winter squash | Jan 16–23 | Feb 20–Mar 6 (transplant) Feb 20–Mar 6 (sow outdoors) | – |
| Pumpkin | – | Feb 20–Mar 6 (sow outdoors) | – |
| Watermelon | Jan 16–23 | Feb 27–Mar 13 (transplant) Feb 27–Mar 13 (sow outdoors) | – |
| Cantaloupe / muskmelon | Jan 16–23 | Feb 27–Mar 13 (transplant) Feb 27–Mar 13 (sow outdoors) | – |
| Okra | Jan 2–16 | Feb 27–Mar 13 (transplant) Feb 27–Mar 13 (sow outdoors) | – |
| Celery | Nov 21–Dec 5 | Feb 20–27 (transplant) | – |
| Basil | Jan 2–16 | Feb 20–Mar 6 (transplant) Feb 20–Mar 6 (sow outdoors) | – |
| Cilantro | – | Jan 30–Feb 27 (sow outdoors) | Oct 6–20 (sowing) |
| Parsley | Dec 5–19 | Jan 30–Feb 13 (transplant) Jan 23–Feb 13 (sow outdoors) | – |
| Dill | – | Feb 13–27 (sow outdoors) | Oct 6–20 (sowing) |
| Sunflower | – | Feb 13–27 (sow outdoors) | – |
| Asparagus (crowns) | – | Jan 16–30 (transplant) | – |
| Rhubarb (crowns) | – | Jan 16–30 (transplant) | – |
| Strawberry (plants) | – | Jan 16–30 (transplant) | Sep 22–Oct 20 (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: Tacna 3 NE, AZ (NOAA GHCN-Daily ID USC00028396), elevation 324 ft, 2.5 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Yuma 27 ENE, AZ | 20 mi | Jan 11 | Dec 21 |
| Dateland Whitewing Rch, AZ | 30 mi | Jan 25 | Dec 13 |
| Yuma Proving Ground, AZ | 31 mi | Jan 4 | Dec 25 |
The average last-frost dates of these stations span 40 days, a rough guide to local variation. See data sources & methods.
Frost questions for 85352
When is the last frost in 85352?
The average (50% chance) last spring freeze of 32°F for ZIP 85352 is February 13. 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 85352?
The average first fall freeze is December 1. In 1 year in 10 it comes by November 14.
What hardiness zone is 85352?
ZIP 85352 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 85352 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
85347 85356 Wellton 85365 Martinez Lake 85367 Fortuna Foothills 92222 85333 Dateland 85364 Yuma 85350 San Luis
Other ZIP codes in Yuma County
85336 85347 85349 85350 85356 85364 85365 85367 All Yuma County frost dates · Arizona frost dates
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- Freeze alerts
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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.