Frost dates for 78842 — Del Rio, TX
Last spring frostFeb 19median date
First fall frostDec 4median date
Growing season288 daysfrost-free
Hardiness zone9aZone 9a
How Del Rio compares
- In 8 years out of 10, the last spring frost in Del Rio falls between January 24 and March 11, a 46-day window. The first fall frost falls between November 16 and December 20.
- The median last frost is 24 days earlier than the Texas median of Mar 15.
- Its 288-day growing season is longer than 94% of the 1,316 Texas places with a regular frost season (state median 245 days).
- The last frost is 12 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 21 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | January 24 |
| 50% (median) | February 19 |
| 10% (safe for tender plants) | March 11 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 16 |
| 50% (median) | December 4 |
| 90% (late) | December 20 |
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 Del Rio, TX
Frost dates for 78842 — Del Rio, TX — last frost Feb 19, first frost Dec 4, zone 9a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Nov 27 to Dec 11Transplant outside: Jan 22 to Feb 5
Start indoors: Dec 11 to Dec 25Transplant outside: Mar 5 to Mar 19
Start indoors: Dec 11 to Dec 25Transplant outside: Mar 5 to Mar 19
Start indoors: Dec 25 to Jan 8Start indoors: Dec 25 to Jan 8Transplant outside: Feb 26 to Mar 12
Start indoors: Dec 25 to Jan 8Start indoors: Dec 25 to Jan 8Transplant outside: Jan 29 to Feb 12Sow outdoors: Jan 22 to Feb 26Plant for fall: Oct 9 to Nov 6
Start indoors: Dec 25 to Jan 8Start indoors: Dec 25 to Jan 8Transplant outside: Jan 22 to Feb 5Sow outdoors: Jan 22 to Feb 5Plant for fall: Sep 25 to Oct 16
Start indoors: Dec 25 to Jan 8Start indoors: Dec 25 to Jan 8Transplant outside: Feb 5 to Feb 19Plant for fall: Aug 28 to Sep 18
Start indoors: Dec 25 to Jan 8Start indoors: Dec 25 to Jan 8Transplant outside: Jan 29 to Feb 12Plant for fall: Aug 28 to Sep 18
Start indoors: Dec 25 to Jan 8Start indoors: Dec 25 to Jan 8Transplant outside: Feb 5 to Feb 19Plant for fall: Aug 28 to Sep 18
Start indoors: Jan 8 to Jan 22Transplant outside: Mar 12 to Mar 26Sow outdoors: Mar 12 to Mar 26
Start indoors: Jan 8 to Jan 22Transplant outside: Feb 26 to Mar 12
Sow outdoors: Jan 8 to Jan 29Plant for fall: Sep 11 to Oct 2
Sow outdoors: Jan 8 to Jan 29Plant for fall: Oct 9 to Oct 30
Sow outdoors: Jan 15 to Feb 26Plant for fall: Oct 23 to Nov 13
Start indoors: Jan 22 to Jan 29Transplant outside: Mar 5 to Mar 12Sow outdoors: Feb 26 to Mar 12Plant for fall: Sep 18 to Oct 2
Start indoors: Jan 22 to Jan 29Sow outdoors: Feb 26 to Mar 12Plant for fall: Sep 25 to Oct 9
Start indoors: Jan 22 to Jan 29Sow outdoors: Feb 26 to Mar 12
Start indoors: Jan 22 to Jan 29Transplant outside: Mar 5 to Mar 19
Sow outdoors: Jan 29 to Feb 26Plant for fall: Sep 11 to Sep 25
Sow outdoors: Jan 29 to Feb 26Plant for fall: Sep 25 to Oct 9
Sow outdoors: Jan 29 to Feb 19
Sow outdoors: Feb 5 to Mar 5Plant for fall: Sep 25 to Oct 9
Sow outdoors: Feb 5 to Feb 26Plant for fall: Oct 9 to Oct 30
Sow outdoors: Feb 26 to Mar 19Plant for fall: Sep 18 to Oct 2
Sow outdoors: Feb 26 to Mar 12
Transplant outside: Mar 5 to Mar 26
Plant for fall: Nov 20 to Dec 25
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Del Rio, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 27 – Dec 11 | Jan 22 – Feb 5 | — | — |
| Peppers | Dec 11 – Dec 25 | Mar 5 – Mar 19 | — | — |
| Eggplant | Dec 11 – Dec 25 | Mar 5 – Mar 19 | — | — |
| Tomatoes | Dec 25 – Jan 8 | Feb 26 – Mar 12 | — | — |
| Lettuce | Dec 25 – Jan 8 | Jan 29 – Feb 12 | Jan 22 – Feb 26 | Oct 9 – Nov 6 |
| Kale | Dec 25 – Jan 8 | Jan 22 – Feb 5 | Jan 22 – Feb 5 | Sep 25 – Oct 16 |
| Broccoli | Dec 25 – Jan 8 | Feb 5 – Feb 19 | — | Aug 28 – Sep 18 |
| Cabbage | Dec 25 – Jan 8 | Jan 29 – Feb 12 | — | Aug 28 – Sep 18 |
| Cauliflower | Dec 25 – Jan 8 | Feb 5 – Feb 19 | — | Aug 28 – Sep 18 |
| Okra | Jan 8 – Jan 22 | Mar 12 – Mar 26 | Mar 12 – Mar 26 | — |
| Basil | Jan 8 – Jan 22 | Feb 26 – Mar 12 | — | — |
| Peas | — | — | Jan 8 – Jan 29 | Sep 11 – Oct 2 |
| Spinach | — | — | Jan 8 – Jan 29 | Oct 9 – Oct 30 |
| Radishes | — | — | Jan 15 – Feb 26 | Oct 23 – Nov 13 |
| Cucumbers | Jan 22 – Jan 29 | Mar 5 – Mar 12 | Feb 26 – Mar 12 | Sep 18 – Oct 2 |
| Zucchini & Summer Squash | Jan 22 – Jan 29 | — | Feb 26 – Mar 12 | Sep 25 – Oct 9 |
| Winter Squash & Pumpkins | Jan 22 – Jan 29 | — | Feb 26 – Mar 12 | — |
| Melons & Watermelon | Jan 22 – Jan 29 | Mar 5 – Mar 19 | — | — |
| Carrots | — | — | Jan 29 – Feb 26 | Sep 11 – Sep 25 |
| Beets | — | — | Jan 29 – Feb 26 | Sep 25 – Oct 9 |
| Potatoes | — | — | Jan 29 – Feb 19 | — |
| Swiss Chard | — | — | Feb 5 – Mar 5 | Sep 25 – Oct 9 |
| Cilantro | — | — | Feb 5 – Feb 26 | Oct 9 – Oct 30 |
| Green Beans | — | — | Feb 26 – Mar 19 | Sep 18 – Oct 2 |
| Sweet Corn | — | — | Feb 26 – Mar 12 | — |
| Sweet Potatoes | — | Mar 5 – Mar 26 | — | — |
| Garlic | — | — | — | Nov 20 – Dec 25 |
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 Del Rio 4nw, TX weather station, about 1 km away (elevation 1,050 ft (320 m)).
ZIP codes in Del Rio: 78840 78841 78842 78847
Frost dates near Del Rio
- Laughlin Afb Feb 16 · Dec 3
- Comstock Feb 27 · Nov 27
- Brackettville Mar 5 · Nov 24
- Quemado Feb 19 · Dec 1
- Langtry Feb 27 · Nov 27
- Eagle Pass Feb 19 · Dec 1
- Barksdale Mar 12 · Nov 14
- Camp Wood Mar 12 · Nov 14
Frequently asked questions
When is the last frost in Del Rio, TX?
The median last spring frost in Del Rio, TX is February 19. There is still about a 10% chance of frost after March 11, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Del Rio, TX?
The median first fall frost is December 4, with about a 10% chance of frost before November 16.
How long is the growing season in Del Rio, TX?
About 288 days between the median last spring frost and first fall frost.
What planting zone is Del Rio, TX?
Del Rio, TX is in USDA hardiness zone 9a.