Frost dates for ZIP 78154 (Schertz, TX)
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, Randolph AFB, TX (1 miles away).
- Average last spring frostFeb 2150% chance of a 32°F freeze after this date
- Average first fall frostDec 550% chance of a 32°F freeze by this date
- Growing season (frost-free)289 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°F avg. coldest night
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This week in your yard
As of Oct 17, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Pre-emergent
Soil is 73°F at 4 inches. Fall pre-emergent (annual bluegrass, winter weeds): window open as soil cools through the 70s and 60s.
Fertilizer window
Lawn region: South Central plains. Timing only; always follow the product label.
- Bermudagrass (warm-season): Spring: Several weeks after the lawn is fully green (April–May) (about Apr 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).
- Tall fescue (cool-season): Early fall: September (main feeding); Late fall: November, while still green; Late winter: Optional light feeding February–March. Avoid: Feeding after mid-spring and through summer in the transition zone (stress and brown patch).
Plant now
- Lettuce: fall sowing Sep 26–Oct 24
- Lettuce: fall transplant Oct 10–31
- Spinach: fall sowing Oct 10–31
- Bok choy / Asian greens: fall sowing Oct 10–24
- Arugula: fall sowing Oct 10–Nov 7
- Mustard greens: fall sowing Oct 10–24
- Cilantro: fall sowing Oct 10–24
- Dill: fall sowing Oct 10–24
- Strawberry (plants): fall transplant Sep 26–Oct 24
Coming up in the next 3 weeks
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Dec 5: 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 10 |
| 50% (the "average" last frost) | Feb 21 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 14 |
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 16 |
| 50% (the "average" first frost) | Dec 5 |
| 90% (late: most years have frozen by now) | Jan 1 (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 6 | Nov 24 |
| 32°F (freeze) | Feb 21 | Dec 5 |
| 28°F (hard freeze) | Jan 26 | Dec 19 |
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 78154
Dates count from your average last spring frost (Feb 21) and first fall frost (Dec 5). 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 27–Jan 10 | Feb 28–Mar 14 (transplant) | Aug 8–Sep 5 (transplant) |
| Pepper (sweet and hot) | Dec 13–27 | Mar 7–21 (transplant) | Aug 15–Sep 5 (transplant) |
| Eggplant | Dec 13–27 | Mar 7–21 (transplant) | Aug 15–Sep 5 (transplant) |
| Tomatillo | Dec 27–Jan 10 | Feb 28–Mar 14 (transplant) | – |
| Lettuce | Dec 27–Jan 10 | Jan 31–Feb 21 (transplant) Jan 24–Mar 7 (sow outdoors) | Oct 10–31 (transplant) Sep 26–Oct 24 (sowing) |
| Spinach | – | Jan 10–31 (sow outdoors) | Oct 10–31 (sowing) |
| Kale | Dec 27–Jan 10 | Jan 24–Feb 7 (transplant) Jan 24–Feb 7 (sow outdoors) | Sep 12–Oct 10 (transplant) Aug 29–Sep 26 (sowing) |
| Collards | Dec 27–Jan 10 | Jan 24–Feb 21 (transplant) Jan 24–Feb 21 (sow outdoors) | Sep 12–Oct 10 (transplant) Aug 29–Sep 26 (sowing) |
| Broccoli | Dec 13–27 | Jan 24–Feb 7 (transplant) | Aug 29–Sep 26 (transplant) |
| Cabbage | Dec 13–27 | Jan 24–Feb 7 (transplant) | Aug 29–Sep 26 (transplant) |
| Cauliflower | Dec 13–27 | Feb 7–21 (transplant) | Aug 29–Sep 26 (transplant) |
| Brussels sprouts | Nov 29–Dec 13 | Jan 24–Feb 7 (transplant) | Aug 15–Sep 5 (transplant) |
| Kohlrabi | Dec 27–Jan 10 | Jan 24–Feb 7 (transplant) Jan 24–Feb 7 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Bok choy / Asian greens | – | Jan 24–Feb 7 (sow outdoors) | Oct 10–24 (sowing) |
| Arugula | – | Jan 24–Feb 21 (sow outdoors) | Oct 10–Nov 7 (sowing) |
| Mustard greens | – | Jan 24–Feb 14 (sow outdoors) | Oct 10–24 (sowing) |
| Swiss chard | Jan 10–24 | Feb 7–28 (transplant) Feb 7–Mar 7 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Beet | – | Jan 24–Feb 21 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Carrot | – | Jan 31–Feb 28 (sow outdoors) | Sep 12–26 (sowing) |
| Radish | – | Jan 17–Feb 28 (sow outdoors) | Oct 24–Nov 7 (sowing) |
| Turnip | – | Jan 24–Feb 14 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Parsnip | – | Jan 31–Feb 21 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Dec 27–Jan 24 (sow outdoors) | Sep 12–26 (sowing) |
| Onion (bulbing) | Nov 29–Dec 13 | Jan 10–24 (transplant) | – |
| Green onion / scallion | – | Jan 10–Feb 7 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Leek | Nov 29–Dec 13 | Jan 24–Feb 7 (transplant) | – |
| Garlic | – | – | Oct 24–Nov 21 (sowing) |
| Shallot | – | Jan 10–24 (transplant) | Oct 24–Nov 21 (sowing) |
| Potato | – | Jan 24–Feb 7 (transplant) | Aug 15–29 (transplant) |
| Sweet potato | – | Mar 14–28 (transplant) | – |
| Sweet corn | – | Feb 28–Mar 14 (sow outdoors) | – |
| Bean, bush (snap) | – | Feb 28–Mar 14 (sow outdoors) | Sep 12–26 (sowing) |
| Bean, pole | – | Feb 28–Mar 14 (sow outdoors) | – |
| Lima bean | – | Mar 7–21 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 14–Apr 4 (sow outdoors) | – |
| Cucumber | Jan 24–31 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | Sep 12–26 (sowing) |
| Summer squash / zucchini | Jan 24–31 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | Sep 12–26 (sowing) |
| Winter squash | Jan 24–31 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | – |
| Pumpkin | – | Feb 28–Mar 14 (sow outdoors) | – |
| Watermelon | Jan 24–31 | Mar 7–21 (transplant) Mar 7–21 (sow outdoors) | – |
| Cantaloupe / muskmelon | Jan 24–31 | Mar 7–21 (transplant) Mar 7–21 (sow outdoors) | – |
| Okra | Jan 10–24 | Mar 7–21 (transplant) Mar 7–21 (sow outdoors) | – |
| Celery | Nov 29–Dec 13 | Feb 28–Mar 7 (transplant) | – |
| Basil | Jan 10–24 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | – |
| Cilantro | – | Feb 7–Mar 7 (sow outdoors) | Oct 10–24 (sowing) |
| Parsley | Dec 13–27 | Feb 7–21 (transplant) Jan 31–Feb 21 (sow outdoors) | – |
| Dill | – | Feb 21–Mar 7 (sow outdoors) | Oct 10–24 (sowing) |
| Sunflower | – | Feb 21–Mar 7 (sow outdoors) | – |
| Asparagus (crowns) | – | Jan 24–Feb 7 (transplant) | – |
| Rhubarb (crowns) | – | Jan 24–Feb 7 (transplant) | – |
| Strawberry (plants) | – | Jan 24–Feb 7 (transplant) | Sep 26–Oct 24 (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.
Plants that do well here
Texas A&M AgriLife trials name plants that handle Texas conditions: the Texas Superstar® list and the low-care roses from AgriLife trials. Plant frost-tender annuals after February 21 here (the average last frost). More on plants for Texas. Not affiliated with Texas A&M AgriLife.
This week in Schertz
Soil temperature now
2-inch depth
71°F 55°F or warmer
24-hour average · latest 72°F, as of Oct 17, 9:00 PM CDT
Measured at TexMesonet (TWDB) station EAA Field Research Park, 11 mi away. Daily averages: Thu 83°, Fri 77°.
4-inch depth
73°F 55°F or warmer
24-hour average · latest 74°F, as of Oct 17, 9:00 PM CDT
Measured at TexMesonet (TWDB) station EAA Field Research Park, 11 mi away. Daily averages: Thu 83°, Fri 78°.
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 78154 load here. You can also open the NWS forecast for this ZIP.
Where these numbers come from
Station: Randolph AFB, TX (NOAA GHCN-Daily ID USW00012911), elevation 760 ft, 0.7 miles from the ZIP's center point. NOAA completeness flag: E (estimated from nearby stations).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| New Braunfels, TX | 10 mi | Mar 8 | Nov 18 |
| San Antonio Intl AP, TX | 13 mi | Feb 26 | Nov 28 |
| San Antonio Incarnate Word, TX | 14 mi | Feb 25 | Nov 28 |
The average last-frost dates of these stations span 18 days, a rough guide to local variation. See data sources & methods.
Frost questions for 78154
When is the last frost in 78154?
The average (50% chance) last spring freeze of 32°F for ZIP 78154 is February 21. For a more cautious planting date, use March 14, when only 1 year in 10 still sees a later freeze.
When is the first frost in 78154?
The average first fall freeze is December 5. In 1 year in 10 it comes by November 16.
What hardiness zone is 78154?
ZIP 78154 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 78154 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
78150 Randolph AFB 78148 Universal City 78108 Cibolo 78109 Converse 78233 San Antonio 78239 Windcrest 78124 Zuehl 78244 San Antonio
Other ZIP codes in Bexar County
78002 78023 78073 78101 78109 78112 78148 78150 78152 78201 78202 78203 78204 78205 78207 78208 78209 78210 78211 78212 78213 78214 78215 78216 All Bexar County frost dates · Texas frost dates
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