Grulla, TX frost dates
Frost is light and occasional here — typically a few cold nights around midwinter (about 6 a year). Cover tender plants when frost is forecast.
How Grulla compares
- In a typical year, frost nights in Grulla fall between December 17 and January 31. In 1 year in 10 the first frost comes as early as November 22, or the last frost as late as March 4.
- Compared with Mission, TX, 32 km away, the last frost here is 8 days later than there.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 29 |
| 50% (median) | January 31 |
| 10% (safe for tender plants) | March 4 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 22 |
| 50% (median) | December 17 |
| 90% (late) | January 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 Grulla, TX
Grulla, TX frost dates — last frost Jan 31, first frost Dec 17, zone 10a. whenisthelastfrost.com
In mild climates, summer heat limits many crops as much as frost does. Use this calendar for spring planting and lean on fall and winter for cool-season crops.
When to plant vegetables in Grulla, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 8 – Nov 22 | Jan 3 – Jan 17 | — | — |
| Peppers | Nov 22 – Dec 6 | Feb 14 – Feb 28 | — | — |
| Eggplant | Nov 22 – Dec 6 | Feb 14 – Feb 28 | — | — |
| Tomatoes | Dec 6 – Dec 20 | Feb 7 – Feb 21 | — | — |
| Lettuce | Dec 6 – Dec 20 | Jan 10 – Jan 24 | Jan 3 – Feb 7 | Oct 22 – Nov 19 |
| Kale | Dec 6 – Dec 20 | Jan 3 – Jan 17 | Jan 3 – Jan 17 | Oct 8 – Oct 29 |
| Broccoli | Dec 6 – Dec 20 | Jan 17 – Jan 31 | — | Sep 10 – Oct 1 |
| Cabbage | Dec 6 – Dec 20 | Jan 10 – Jan 24 | — | Sep 10 – Oct 1 |
| Cauliflower | Dec 6 – Dec 20 | Jan 17 – Jan 31 | — | Sep 10 – Oct 1 |
| Okra | Dec 20 – Jan 3 | Feb 21 – Mar 7 | Feb 21 – Mar 7 | — |
| Basil | Dec 20 – Jan 3 | Feb 7 – Feb 21 | — | — |
| Peas | — | — | Dec 20 – Jan 10 | Sep 24 – Oct 15 |
| Spinach | — | — | Dec 20 – Jan 10 | Oct 22 – Nov 12 |
| Radishes | — | — | Dec 27 – Feb 7 | Nov 5 – Nov 26 |
| Cucumbers | Jan 3 – Jan 10 | Feb 14 – Feb 21 | Feb 7 – Feb 21 | Oct 1 – Oct 15 |
| Zucchini & Summer Squash | Jan 3 – Jan 10 | — | Feb 7 – Feb 21 | Oct 8 – Oct 22 |
| Winter Squash & Pumpkins | Jan 3 – Jan 10 | — | Feb 7 – Feb 21 | — |
| Melons & Watermelon | Jan 3 – Jan 10 | Feb 14 – Feb 28 | — | — |
| Carrots | — | — | Jan 10 – Feb 7 | Sep 24 – Oct 8 |
| Beets | — | — | Jan 10 – Feb 7 | Oct 8 – Oct 22 |
| Potatoes | — | — | Jan 10 – Jan 31 | — |
| Swiss Chard | — | — | Jan 17 – Feb 14 | Oct 8 – Oct 22 |
| Cilantro | — | — | Jan 17 – Feb 7 | Oct 22 – Nov 12 |
| Green Beans | — | — | Feb 7 – Feb 28 | Oct 1 – Oct 15 |
| Sweet Corn | — | — | Feb 7 – Feb 21 | — |
| Sweet Potatoes | — | Feb 14 – Mar 7 | — | — |
| Garlic | — | — | — | Dec 3 – Jan 7 |
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 Rio Grande City, TX weather station, 19 km away (elevation 171 ft (52 m)).
Frost dates near Grulla
- Garciasville Jan 31 · Dec 17
- Sullivan City Jan 23 · Dec 28
- Los Ebanos Jan 23 · Dec 28
- La Joya Jan 23 · Dec 28
- Rio Grande City Jan 31 · Dec 17
- Penitas Jan 23 · Dec 28
- Mission Jan 23 · Dec 28
- Santa Elena Jan 23 · Dec 28
- Roma Jan 31 · Dec 17
- Mcallen Jan 9 · Jan 1
Frequently asked questions
When is the last frost in Grulla, TX?
The median last spring frost in Grulla, TX is January 31. There is still about a 10% chance of frost after March 4, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Grulla, TX?
The median first fall frost is December 17, with about a 10% chance of frost before November 22.
How long is the growing season in Grulla, TX?
About 320 days between the median last spring frost and first fall frost.
What planting zone is Grulla, TX?
Grulla, TX is in USDA hardiness zone 10a.