Fall in zone 8aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 85625 (Sunizona, 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, Pearce - Sunsites, AZ (11 miles away).
- Average last spring frostApr 1450% chance of a 32°F freeze after this date
- Average first fall frostNov 250% chance of a 32°F freeze by this date
- Growing season (frost-free)200 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
66°F 55°F or warmer
24-hour average · latest 65°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Walnut Gulch #1 (25 mi), Elgin 5 S (54 mi).
4-inch depth
68°F 55°F or warmer
24-hour average · latest 68°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Walnut Gulch #1 (25 mi), Elgin 5 S (54 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 85625 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 68°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: 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 2: 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 28 |
| 50% (the "average" last frost) | Apr 14 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 30 |
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 20 |
| 50% (the "average" first frost) | Nov 2 |
| 90% (late: most years have frozen by now) | Nov 16 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 28 | Oct 24 |
| 32°F (freeze) | Apr 14 | Nov 2 |
| 28°F (hard freeze) | Mar 27 | Nov 13 |
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 85625
Dates count from your average last spring frost (Apr 14) and first fall frost (Nov 2). 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 17–Mar 3 | Apr 21–May 5 (transplant) | – |
| Pepper (sweet and hot) | Feb 3–17 | Apr 28–May 12 (transplant) | – |
| Eggplant | Feb 3–17 | Apr 28–May 12 (transplant) | – |
| Tomatillo | Feb 17–Mar 3 | Apr 21–May 5 (transplant) | – |
| Lettuce | Feb 17–Mar 3 | Mar 24–Apr 14 (transplant) Mar 17–Apr 28 (sow outdoors) | Sep 7–28 (transplant) Aug 24–Sep 21 (sowing) |
| Spinach | – | Mar 3–24 (sow outdoors) | Sep 7–28 (sowing) |
| Kale | Feb 17–Mar 3 | Mar 17–31 (transplant) Mar 17–31 (sow outdoors) | Aug 10–Sep 7 (transplant) Jul 27–Aug 24 (sowing) |
| Collards | Feb 17–Mar 3 | Mar 17–Apr 14 (transplant) Mar 17–Apr 14 (sow outdoors) | Aug 10–Sep 7 (transplant) Jul 27–Aug 24 (sowing) |
| Broccoli | Feb 3–17 | Mar 17–31 (transplant) | Jul 27–Aug 24 (transplant) |
| Cabbage | Feb 3–17 | Mar 17–31 (transplant) | Jul 27–Aug 24 (transplant) |
| Cauliflower | Feb 3–17 | Mar 31–Apr 14 (transplant) | Jul 27–Aug 24 (transplant) |
| Brussels sprouts | Jan 20–Feb 3 | Mar 17–31 (transplant) | Jul 13–Aug 3 (transplant) |
| Kohlrabi | Feb 17–Mar 3 | Mar 17–31 (transplant) Mar 17–31 (sow outdoors) | Aug 24–Sep 7 (sowing) |
| Bok choy / Asian greens | – | Mar 17–31 (sow outdoors) | Sep 7–21 (sowing) |
| Arugula | – | Mar 17–Apr 14 (sow outdoors) | Sep 7–Oct 5 (sowing) |
| Mustard greens | – | Mar 17–Apr 7 (sow outdoors) | Sep 7–21 (sowing) |
| Swiss chard | Mar 3–17 | Mar 31–Apr 21 (transplant) Mar 31–Apr 28 (sow outdoors) | Aug 24–Sep 7 (sowing) |
| Beet | – | Mar 17–Apr 14 (sow outdoors) | Aug 24–Sep 7 (sowing) |
| Carrot | – | Mar 24–Apr 21 (sow outdoors) | Aug 10–24 (sowing) |
| Radish | – | Mar 10–Apr 21 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Turnip | – | Mar 17–Apr 7 (sow outdoors) | Aug 24–Sep 7 (sowing) |
| Parsnip | – | Mar 24–Apr 14 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 17–Mar 17 (sow outdoors) | Aug 10–24 (sowing) |
| Onion (bulbing) | Jan 20–Feb 3 | Mar 3–17 (transplant) | – |
| Green onion / scallion | – | Mar 3–31 (sow outdoors) | Aug 24–Sep 7 (sowing) |
| Leek | Jan 20–Feb 3 | Mar 17–31 (transplant) | – |
| Garlic | – | – | Sep 21–Oct 19 (sowing) |
| Shallot | – | Mar 3–17 (transplant) | Sep 21–Oct 19 (sowing) |
| Potato | – | Mar 17–31 (transplant) | Jul 13–27 (transplant) |
| Sweet potato | – | May 5–19 (transplant) | – |
| Sweet corn | – | Apr 21–May 5 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 21–May 5 (sow outdoors) | – |
| Bean, pole | – | Apr 21–May 5 (sow outdoors) | – |
| Lima bean | – | Apr 28–May 12 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 5–26 (sow outdoors) | – |
| Cucumber | Mar 17–24 | Apr 21–May 5 (transplant) Apr 21–May 5 (sow outdoors) | – |
| Summer squash / zucchini | Mar 17–24 | Apr 21–May 5 (transplant) Apr 21–May 5 (sow outdoors) | – |
| Winter squash | Mar 17–24 | Apr 21–May 5 (transplant) Apr 21–May 5 (sow outdoors) | – |
| Pumpkin | – | Apr 21–May 5 (sow outdoors) | – |
| Watermelon | Mar 17–24 | Apr 28–May 12 (transplant) Apr 28–May 12 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 17–24 | Apr 28–May 12 (transplant) Apr 28–May 12 (sow outdoors) | – |
| Okra | Mar 3–17 | Apr 28–May 12 (transplant) Apr 28–May 12 (sow outdoors) | – |
| Celery | Jan 20–Feb 3 | Apr 21–28 (transplant) | – |
| Basil | Mar 3–17 | Apr 21–May 5 (transplant) Apr 21–May 5 (sow outdoors) | – |
| Cilantro | – | Mar 31–Apr 28 (sow outdoors) | Sep 7–21 (sowing) |
| Parsley | Feb 3–17 | Mar 31–Apr 14 (transplant) Mar 24–Apr 14 (sow outdoors) | – |
| Dill | – | Apr 14–28 (sow outdoors) | Sep 7–21 (sowing) |
| Sunflower | – | Apr 14–28 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 17–31 (transplant) | – |
| Rhubarb (crowns) | – | Mar 17–31 (transplant) | – |
| Strawberry (plants) | – | Mar 17–31 (transplant) | Aug 24–Sep 21 (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: Pearce - Sunsites, AZ (NOAA GHCN-Daily ID USC00026353), elevation 4,350 ft, 11.0 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Mc Neal, AZ | 19 mi | Apr 6 | Nov 10 |
| Chiricahua Nm, AZ | 20 mi | Apr 16 | Nov 8 |
| Tombstone, AZ | 26 mi | Mar 4 | Nov 29 |
The average last-frost dates of these stations span 43 days, a rough guide to local variation. See data sources & methods.
Frost questions for 85625
When is the last frost in 85625?
The average (50% chance) last spring freeze of 32°F for ZIP 85625 is April 14. For a more cautious planting date, use April 30, when only 1 year in 10 still sees a later freeze.
When is the first frost in 85625?
The average first fall freeze is November 2. In 1 year in 10 it comes by October 20.
What hardiness zone is 85625?
ZIP 85625 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 85625 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
85610 Elfrida 85606 85617 McNeal 85638 Tombstone 85609 Dragoon 85608 Douglas 85630 Benson 85632 San Simon
Other ZIP codes in Cochise County
85602 85603 85605 85606 85607 85608 85609 85610 85613 85615 85616 85617 85620 85626 85627 85630 85632 85635 85638 85650 All Cochise 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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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.