Frost dates for ZIP 85757 (Valencia West, 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, Tucson 11 W, AZ (8 miles away).
- Average last spring frostFeb 850% chance of a 32°F freeze after this date
- Average first fall frostDec 1050% chance of a 32°F freeze by this date
- Growing season (frost-free)303 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°F avg. coldest night
This week in your yard
As of Oct 18, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Fall in zone 9a
Soil temperature now
2-inch depth
76°F 55°F or warmer
24-hour average · latest 68°F, as of Oct 18, 7:00 AM CDT
Measured at NOAA USCRN station Tucson 11 W, 8 mi away. Daily averages: Thu 74°, Fri 77°, Sat 76°.
4-inch depth
76°F 55°F or warmer
24-hour average · latest 70°F, as of Oct 18, 7:00 AM CDT
Measured at NOAA USCRN station Tucson 11 W, 8 mi away. Daily averages: Thu 73°, Fri 76°, Sat 76°.
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 85757 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 76°F at 4 inches. 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 26 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 1–29
- Lettuce: fall transplant Oct 15–Nov 5
- Spinach: fall sowing Oct 15–Nov 5
- Bok choy / Asian greens: fall sowing Oct 15–29
- Arugula: fall sowing Oct 15–Nov 12
- Mustard greens: fall sowing Oct 15–29
- Cilantro: fall sowing Oct 15–29
- Dill: fall sowing Oct 15–29
- Strawberry (plants): fall transplant Oct 1–29
Coming up in the next 3 weeks
- Radish: fall sowing Oct 29–Nov 12
- Garlic: fall sowing Oct 29–Nov 26
- Shallot: fall sowing Oct 29–Nov 26
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Dec 10: 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 6 |
| 50% (the "average" last frost) | Feb 8 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 8 |
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 22 |
| 50% (the "average" first frost) | Dec 10 |
| 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) | Mar 4 | Nov 29 |
| 32°F (freeze) | Feb 8 | Dec 10 |
| 28°F (hard freeze) | Jan 20 | Dec 27 |
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 85757
Dates count from your average last spring frost (Feb 8) and first fall frost (Dec 10). 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 14–28 | Feb 15–Mar 1 (transplant) | Aug 13–Sep 10 (transplant) |
| Pepper (sweet and hot) | Nov 30–Dec 14 | Feb 22–Mar 8 (transplant) | Aug 20–Sep 10 (transplant) |
| Eggplant | Nov 30–Dec 14 | Feb 22–Mar 8 (transplant) | Aug 20–Sep 10 (transplant) |
| Tomatillo | Dec 14–28 | Feb 15–Mar 1 (transplant) | – |
| Lettuce | Dec 14–28 | Jan 18–Feb 8 (transplant) Jan 11–Feb 22 (sow outdoors) | Oct 15–Nov 5 (transplant) Oct 1–29 (sowing) |
| Spinach | – | Dec 28–Jan 18 (sow outdoors) | Oct 15–Nov 5 (sowing) |
| Kale | Dec 14–28 | Jan 11–25 (transplant) Jan 11–25 (sow outdoors) | Sep 17–Oct 15 (transplant) Sep 3–Oct 1 (sowing) |
| Collards | Dec 14–28 | Jan 11–Feb 8 (transplant) Jan 11–Feb 8 (sow outdoors) | Sep 17–Oct 15 (transplant) Sep 3–Oct 1 (sowing) |
| Broccoli | Nov 30–Dec 14 | Jan 11–25 (transplant) | Sep 3–Oct 1 (transplant) |
| Cabbage | Nov 30–Dec 14 | Jan 11–25 (transplant) | Sep 3–Oct 1 (transplant) |
| Cauliflower | Nov 30–Dec 14 | Jan 25–Feb 8 (transplant) | Sep 3–Oct 1 (transplant) |
| Brussels sprouts | Nov 16–30 | Jan 11–25 (transplant) | Aug 20–Sep 10 (transplant) |
| Kohlrabi | Dec 14–28 | Jan 11–25 (transplant) Jan 11–25 (sow outdoors) | Oct 1–15 (sowing) |
| Bok choy / Asian greens | – | Jan 11–25 (sow outdoors) | Oct 15–29 (sowing) |
| Arugula | – | Jan 11–Feb 8 (sow outdoors) | Oct 15–Nov 12 (sowing) |
| Mustard greens | – | Jan 11–Feb 1 (sow outdoors) | Oct 15–29 (sowing) |
| Swiss chard | Dec 28–Jan 11 | Jan 25–Feb 15 (transplant) Jan 25–Feb 22 (sow outdoors) | Oct 1–15 (sowing) |
| Beet | – | Jan 11–Feb 8 (sow outdoors) | Oct 1–15 (sowing) |
| Carrot | – | Jan 18–Feb 15 (sow outdoors) | Sep 17–Oct 1 (sowing) |
| Radish | – | Jan 4–Feb 15 (sow outdoors) | Oct 29–Nov 12 (sowing) |
| Turnip | – | Jan 11–Feb 1 (sow outdoors) | Oct 1–15 (sowing) |
| Parsnip | – | Jan 18–Feb 8 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Dec 14–Jan 11 (sow outdoors) | Sep 17–Oct 1 (sowing) |
| Onion (bulbing) | Nov 16–30 | Dec 28–Jan 11 (transplant) | – |
| Green onion / scallion | – | Dec 28–Jan 25 (sow outdoors) | Oct 1–15 (sowing) |
| Leek | Nov 16–30 | Jan 11–25 (transplant) | – |
| Garlic | – | – | Oct 29–Nov 26 (sowing) |
| Shallot | – | Dec 28–Jan 11 (transplant) | Oct 29–Nov 26 (sowing) |
| Potato | – | Jan 11–25 (transplant) | Aug 20–Sep 3 (transplant) |
| Sweet potato | – | Mar 1–15 (transplant) | – |
| Sweet corn | – | Feb 15–Mar 1 (sow outdoors) | – |
| Bean, bush (snap) | – | Feb 15–Mar 1 (sow outdoors) | Sep 17–Oct 1 (sowing) |
| Bean, pole | – | Feb 15–Mar 1 (sow outdoors) | – |
| Lima bean | – | Feb 22–Mar 8 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 1–22 (sow outdoors) | – |
| Cucumber | Jan 11–18 | Feb 15–Mar 1 (transplant) Feb 15–Mar 1 (sow outdoors) | Sep 17–Oct 1 (sowing) |
| Summer squash / zucchini | Jan 11–18 | Feb 15–Mar 1 (transplant) Feb 15–Mar 1 (sow outdoors) | Sep 17–Oct 1 (sowing) |
| Winter squash | Jan 11–18 | Feb 15–Mar 1 (transplant) Feb 15–Mar 1 (sow outdoors) | – |
| Pumpkin | – | Feb 15–Mar 1 (sow outdoors) | – |
| Watermelon | Jan 11–18 | Feb 22–Mar 8 (transplant) Feb 22–Mar 8 (sow outdoors) | – |
| Cantaloupe / muskmelon | Jan 11–18 | Feb 22–Mar 8 (transplant) Feb 22–Mar 8 (sow outdoors) | – |
| Okra | Dec 28–Jan 11 | Feb 22–Mar 8 (transplant) Feb 22–Mar 8 (sow outdoors) | – |
| Celery | Nov 16–30 | Feb 15–22 (transplant) | – |
| Basil | Dec 28–Jan 11 | Feb 15–Mar 1 (transplant) Feb 15–Mar 1 (sow outdoors) | – |
| Cilantro | – | Jan 25–Feb 22 (sow outdoors) | Oct 15–29 (sowing) |
| Parsley | Nov 30–Dec 14 | Jan 25–Feb 8 (transplant) Jan 18–Feb 8 (sow outdoors) | – |
| Dill | – | Feb 8–22 (sow outdoors) | Oct 15–29 (sowing) |
| Sunflower | – | Feb 8–22 (sow outdoors) | – |
| Asparagus (crowns) | – | Jan 11–25 (transplant) | – |
| Rhubarb (crowns) | – | Jan 11–25 (transplant) | – |
| Strawberry (plants) | – | Jan 11–25 (transplant) | Oct 1–29 (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: Tucson 11 W, AZ (NOAA GHCN-Daily ID USW00053131), elevation 2,733 ft, 8.1 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Tucson 17 NW, AZ | 10 mi | Feb 23 | Dec 6 |
| Tucson Intl AP, AZ | 10 mi | Feb 5 | Dec 9 |
| Tucson U Of A #1, AZ | 11 mi | Feb 11 | Dec 2 |
The average last-frost dates of these stations span 18 days, a rough guide to local variation. See data sources & methods.
Frost questions for 85757
When is the last frost in 85757?
The average (50% chance) last spring freeze of 32°F for ZIP 85757 is February 8. For a more cautious planting date, use March 8, when only 1 year in 10 still sees a later freeze.
When is the first frost in 85757?
The average first fall freeze is December 10. In 1 year in 10 it comes by November 22.
What hardiness zone is 85757?
ZIP 85757 is in USDA zone 9a (20 to 25°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 85757 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
85746 Drexel Heights 85713 Tucson 85709 Tucson 85745 Tucson Mountains 85723 Tucson 85714 Tucson 85701 Tucson 85706 Tucson
Other ZIP codes in Pima County
85321 85341 85601 85614 85619 85622 85629 85633 85634 85639 85641 85645 85653 85654 85701 85704 85705 85706 85707 85708 85709 85710 85711 85712 All Pima County frost dates · Arizona frost dates
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