Universal City, TX frost dates
Last spring frostFeb 21median date
First fall frostDec 5median date
Growing season287 daysfrost-free
Hardiness zone9aZone 9a
How Universal City compares
- In 8 years out of 10, the last spring frost in Universal City falls between January 10 and March 14, a 63-day window. The first fall frost falls between November 16 and January 1.
- The median last frost is 22 days earlier than the Texas median of Mar 15.
- Its 287-day growing season is longer than 92% of the 1,316 Texas places with a regular frost season (state median 245 days).
- The last frost is 10 days earlier than the zone 9a median of Mar 3. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 9a chart.
- The weather station records an average of 12 nights a year at or below 32°F.
- Compared with San Antonio, TX, 22 km away, the last frost here is 4 days earlier than there and the growing season is 11 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | January 10 |
| 50% (median) | February 21 |
| 10% (safe for tender plants) | March 14 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 16 |
| 50% (median) | December 5 |
| 90% (late) | January 1 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Universal City, TX
Universal City, TX frost dates — last frost Feb 21, first frost Dec 5, zone 9a. whenisthelastfrost.com
Crop
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Start indoors: Nov 29 to Dec 13Transplant outside: Jan 24 to Feb 7
Start indoors: Dec 13 to Dec 27Transplant outside: Mar 7 to Mar 21
Start indoors: Dec 13 to Dec 27Transplant outside: Mar 7 to Mar 21
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Feb 28 to Mar 14
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Jan 31 to Feb 14Sow outdoors: Jan 24 to Feb 28Plant for fall: Oct 10 to Nov 7
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Jan 24 to Feb 7Sow outdoors: Jan 24 to Feb 7Plant for fall: Sep 26 to Oct 17
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Feb 7 to Feb 21Plant for fall: Aug 29 to Sep 19
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Jan 31 to Feb 14Plant for fall: Aug 29 to Sep 19
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Feb 7 to Feb 21Plant for fall: Aug 29 to Sep 19
Start indoors: Jan 10 to Jan 24Transplant outside: Mar 14 to Mar 28Sow outdoors: Mar 14 to Mar 28
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 28 to Mar 14
Sow outdoors: Jan 10 to Jan 31Plant for fall: Sep 12 to Oct 3
Sow outdoors: Jan 10 to Jan 31Plant for fall: Oct 10 to Oct 31
Sow outdoors: Jan 17 to Feb 28Plant for fall: Oct 24 to Nov 14
Start indoors: Jan 24 to Jan 31Transplant outside: Mar 7 to Mar 14Sow outdoors: Feb 28 to Mar 14Plant for fall: Sep 19 to Oct 3
Start indoors: Jan 24 to Jan 31Sow outdoors: Feb 28 to Mar 14Plant for fall: Sep 26 to Oct 10
Start indoors: Jan 24 to Jan 31Sow outdoors: Feb 28 to Mar 14
Start indoors: Jan 24 to Jan 31Transplant outside: Mar 7 to Mar 21
Sow outdoors: Jan 31 to Feb 28Plant for fall: Sep 12 to Sep 26
Sow outdoors: Jan 31 to Feb 28Plant for fall: Sep 26 to Oct 10
Sow outdoors: Jan 31 to Feb 21
Sow outdoors: Feb 7 to Mar 7Plant for fall: Sep 26 to Oct 10
Sow outdoors: Feb 7 to Feb 28Plant for fall: Oct 10 to Oct 31
Sow outdoors: Feb 28 to Mar 21Plant for fall: Sep 19 to Oct 3
Sow outdoors: Feb 28 to Mar 14
Transplant outside: Mar 7 to Mar 28
Plant for fall: Nov 21 to Dec 26
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Universal City, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 29 – Dec 13 | Jan 24 – Feb 7 | — | — |
| Peppers | Dec 13 – Dec 27 | Mar 7 – Mar 21 | — | — |
| Eggplant | Dec 13 – Dec 27 | Mar 7 – Mar 21 | — | — |
| Tomatoes | Dec 27 – Jan 10 | Feb 28 – Mar 14 | — | — |
| Lettuce | Dec 27 – Jan 10 | Jan 31 – Feb 14 | Jan 24 – Feb 28 | Oct 10 – Nov 7 |
| Kale | Dec 27 – Jan 10 | Jan 24 – Feb 7 | Jan 24 – Feb 7 | Sep 26 – Oct 17 |
| Broccoli | Dec 27 – Jan 10 | Feb 7 – Feb 21 | — | Aug 29 – Sep 19 |
| Cabbage | Dec 27 – Jan 10 | Jan 31 – Feb 14 | — | Aug 29 – Sep 19 |
| Cauliflower | Dec 27 – Jan 10 | Feb 7 – Feb 21 | — | Aug 29 – Sep 19 |
| Okra | Jan 10 – Jan 24 | Mar 14 – Mar 28 | Mar 14 – Mar 28 | — |
| Basil | Jan 10 – Jan 24 | Feb 28 – Mar 14 | — | — |
| Peas | — | — | Jan 10 – Jan 31 | Sep 12 – Oct 3 |
| Spinach | — | — | Jan 10 – Jan 31 | Oct 10 – Oct 31 |
| Radishes | — | — | Jan 17 – Feb 28 | Oct 24 – Nov 14 |
| Cucumbers | Jan 24 – Jan 31 | Mar 7 – Mar 14 | Feb 28 – Mar 14 | Sep 19 – Oct 3 |
| Zucchini & Summer Squash | Jan 24 – Jan 31 | — | Feb 28 – Mar 14 | Sep 26 – Oct 10 |
| Winter Squash & Pumpkins | Jan 24 – Jan 31 | — | Feb 28 – Mar 14 | — |
| Melons & Watermelon | Jan 24 – Jan 31 | Mar 7 – Mar 21 | — | — |
| Carrots | — | — | Jan 31 – Feb 28 | Sep 12 – Sep 26 |
| Beets | — | — | Jan 31 – Feb 28 | Sep 26 – Oct 10 |
| Potatoes | — | — | Jan 31 – Feb 21 | — |
| Swiss Chard | — | — | Feb 7 – Mar 7 | Sep 26 – Oct 10 |
| Cilantro | — | — | Feb 7 – Feb 28 | Oct 10 – Oct 31 |
| Green Beans | — | — | Feb 28 – Mar 21 | Sep 19 – Oct 3 |
| Sweet Corn | — | — | Feb 28 – Mar 14 | — |
| Sweet Potatoes | — | Mar 7 – Mar 28 | — | — |
| Garlic | — | — | — | Nov 21 – Dec 26 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Randolph Afb, TX weather station, 2 km away (elevation 761 ft (232 m)).
Frost dates near Universal City
- Schertz Feb 21 · Dec 5
- Converse Feb 21 · Dec 5
- Cibolo Feb 21 · Dec 5
- Marion Mar 8 · Nov 18
- Saint Hedwig Feb 21 · Dec 5
- Adkins Feb 21 · Dec 5
- San Antonio Feb 25 · Nov 28
- Jbsa Ft Sam Houston Feb 25 · Nov 28
- Jbsa Lackland Feb 25 · Nov 28
- Mc Queeney Mar 1 · Nov 26
Frequently asked questions
When is the last frost in Universal City, TX?
The median last spring frost in Universal City, TX is February 21. There is still about a 10% chance of frost after March 14, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Universal City, TX?
The median first fall frost is December 5, with about a 10% chance of frost before November 16.
How long is the growing season in Universal City, TX?
About 287 days between the median last spring frost and first fall frost.
What planting zone is Universal City, TX?
Universal City, TX is in USDA hardiness zone 9a.