Frost dates for ZIP 77511 (Alvin, 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, Alvin, TX (1 miles away).
- Average last spring frostFeb 1450% 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)298 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 17, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
No soil station with a fresh reading within 62 miles.
4-inch depth
No soil station with a fresh reading within 62 miles.
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 77511 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
No soil reading near this ZIP. Typical extension timing for your region: spring late January to mid-February (south Florida: earlier; check local soil temps); fall October to early November.
Fertilizer window
Lawn region: Gulf Coast and peninsular Florida. Timing only; always follow the product label.
- St. Augustinegrass (warm-season): Spring: About 2–3 weeks after full green-up (May in the Carolinas; earlier in Florida and south Texas) (about Mar 25 here, using green-up about 3–4 weeks after your average last frost); Summer: Light feedings June–August where local rules allow; Last: No later than about mid-September in the Carolinas, about 6–8 weeks before first frost elsewhere. Avoid: Feeding before green-up or late in fall (feeds weeds and favors large patch and cold injury).
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 15 |
| 50% (the "average" last frost) | Feb 14 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 13 |
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 5 |
| 90% (late: most years have frozen by now) | Jan 8 (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 5 | Nov 23 |
| 32°F (freeze) | Feb 14 | Dec 5 |
| 28°F (hard freeze) | Jan 25 | Dec 30 |
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 77511
Dates count from your average last spring frost (Feb 14) 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 20–Jan 3 | Feb 21–Mar 7 (transplant) | Aug 8–Sep 5 (transplant) |
| Pepper (sweet and hot) | Dec 6–20 | Feb 28–Mar 14 (transplant) | Aug 15–Sep 5 (transplant) |
| Eggplant | Dec 6–20 | Feb 28–Mar 14 (transplant) | Aug 15–Sep 5 (transplant) |
| Tomatillo | Dec 20–Jan 3 | Feb 21–Mar 7 (transplant) | – |
| Lettuce | Dec 20–Jan 3 | Jan 24–Feb 14 (transplant) Jan 17–Feb 28 (sow outdoors) | Oct 10–31 (transplant) Sep 26–Oct 24 (sowing) |
| Spinach | – | Jan 3–24 (sow outdoors) | Oct 10–31 (sowing) |
| Kale | Dec 20–Jan 3 | Jan 17–31 (transplant) Jan 17–31 (sow outdoors) | Sep 12–Oct 10 (transplant) Aug 29–Sep 26 (sowing) |
| Collards | Dec 20–Jan 3 | Jan 17–Feb 14 (transplant) Jan 17–Feb 14 (sow outdoors) | Sep 12–Oct 10 (transplant) Aug 29–Sep 26 (sowing) |
| Broccoli | Dec 6–20 | Jan 17–31 (transplant) | Aug 29–Sep 26 (transplant) |
| Cabbage | Dec 6–20 | Jan 17–31 (transplant) | Aug 29–Sep 26 (transplant) |
| Cauliflower | Dec 6–20 | Jan 31–Feb 14 (transplant) | Aug 29–Sep 26 (transplant) |
| Brussels sprouts | Nov 22–Dec 6 | Jan 17–31 (transplant) | Aug 15–Sep 5 (transplant) |
| Kohlrabi | Dec 20–Jan 3 | Jan 17–31 (transplant) Jan 17–31 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Bok choy / Asian greens | – | Jan 17–31 (sow outdoors) | Oct 10–24 (sowing) |
| Arugula | – | Jan 17–Feb 14 (sow outdoors) | Oct 10–Nov 7 (sowing) |
| Mustard greens | – | Jan 17–Feb 7 (sow outdoors) | Oct 10–24 (sowing) |
| Swiss chard | Jan 3–17 | Jan 31–Feb 21 (transplant) Jan 31–Feb 28 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Beet | – | Jan 17–Feb 14 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Carrot | – | Jan 24–Feb 21 (sow outdoors) | Sep 12–26 (sowing) |
| Radish | – | Jan 10–Feb 21 (sow outdoors) | Oct 24–Nov 7 (sowing) |
| Turnip | – | Jan 17–Feb 7 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Parsnip | – | Jan 24–Feb 14 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Dec 20–Jan 17 (sow outdoors) | Sep 12–26 (sowing) |
| Onion (bulbing) | Nov 22–Dec 6 | Jan 3–17 (transplant) | – |
| Green onion / scallion | – | Jan 3–31 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Leek | Nov 22–Dec 6 | Jan 17–31 (transplant) | – |
| Garlic | – | – | Oct 24–Nov 21 (sowing) |
| Shallot | – | Jan 3–17 (transplant) | Oct 24–Nov 21 (sowing) |
| Potato | – | Jan 17–31 (transplant) | Aug 15–29 (transplant) |
| Sweet potato | – | Mar 7–21 (transplant) | – |
| Sweet corn | – | Feb 21–Mar 7 (sow outdoors) | – |
| Bean, bush (snap) | – | Feb 21–Mar 7 (sow outdoors) | Sep 12–26 (sowing) |
| Bean, pole | – | Feb 21–Mar 7 (sow outdoors) | – |
| Lima bean | – | Feb 28–Mar 14 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 7–28 (sow outdoors) | – |
| Cucumber | Jan 17–24 | Feb 21–Mar 7 (transplant) Feb 21–Mar 7 (sow outdoors) | Sep 12–26 (sowing) |
| Summer squash / zucchini | Jan 17–24 | Feb 21–Mar 7 (transplant) Feb 21–Mar 7 (sow outdoors) | Sep 12–26 (sowing) |
| Winter squash | Jan 17–24 | Feb 21–Mar 7 (transplant) Feb 21–Mar 7 (sow outdoors) | – |
| Pumpkin | – | Feb 21–Mar 7 (sow outdoors) | – |
| Watermelon | Jan 17–24 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | – |
| Cantaloupe / muskmelon | Jan 17–24 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | – |
| Okra | Jan 3–17 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | – |
| Celery | Nov 22–Dec 6 | Feb 21–28 (transplant) | – |
| Basil | Jan 3–17 | Feb 21–Mar 7 (transplant) Feb 21–Mar 7 (sow outdoors) | – |
| Cilantro | – | Jan 31–Feb 28 (sow outdoors) | Oct 10–24 (sowing) |
| Parsley | Dec 6–20 | Jan 31–Feb 14 (transplant) Jan 24–Feb 14 (sow outdoors) | – |
| Dill | – | Feb 14–28 (sow outdoors) | Oct 10–24 (sowing) |
| Sunflower | – | Feb 14–28 (sow outdoors) | – |
| Asparagus (crowns) | – | Jan 17–31 (transplant) | – |
| Rhubarb (crowns) | – | Jan 17–31 (transplant) | – |
| Strawberry (plants) | – | Jan 17–31 (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 14 here (the average last frost). More on plants for Texas. Not affiliated with Texas A&M AgriLife.
Where these numbers come from
Station: Alvin, TX (NOAA GHCN-Daily ID USC00410204), elevation 28 ft, 1.3 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Houston Clover Fld, TX | 10 mi | Jan 31 | Dec 27 |
| Houston Nwso, TX | 12 mi | Jan 31 | Dec 14 |
| Houston Hobby AP, TX | 18 mi | Jan 30 | Dec 28 |
The average last-frost dates of these stations span 15 days, a rough guide to local variation. See data sources & methods.
Frost questions for 77511
When is the last frost in 77511?
The average (50% chance) last spring freeze of 32°F for ZIP 77511 is February 14. For a more cautious planting date, use March 13, when only 1 year in 10 still sees a later freeze.
When is the first frost in 77511?
The average first fall freeze is December 5. In 1 year in 10 it comes by November 14.
What hardiness zone is 77511?
ZIP 77511 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 77511 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
77517 Santa Fe 77577 Liverpool 77510 Santa Fe 77546 Friendswood 77578 Manvel 77534 Danbury 77583 Iowa Colony 77581 Pearland
Other ZIP codes in Brazoria County
77422 77430 77431 77480 77486 77515 77531 77534 77541 77566 77577 77578 77581 77583 77584 All Brazoria County frost dates · Texas frost dates
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