Frost dates for 78002Atascosa, TX
The average last spring frost in Atascosa is February 24 and the average first fall frost is December 2, giving a typical growing season of about 283 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Feb 24
- Average first fall frost
- Dec 2
- Growing season
- 283 days
Safer after Mar 14 (1-in-10 risk)
Possible by Nov 14 (1-in-10 risk)
First frost typically in 35 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Feb 15 · Mar 6 · Mar 27 | Nov 1 · Nov 21 · Dec 10 | 257 days | 100% |
| Frost / freeze (32°F) | Jan 23 · Feb 24 · Mar 14 | Nov 14 · Dec 2 · Dec 30 | 283 days | 100% |
| Hard freeze (28°F) | Dec 26 · Feb 4 · Mar 7 | Nov 25 · Dec 18 · Jan 30 | 316 days | 92% |
Planting calendar for Atascosa
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Jan 24 – Apr 1 |
| Tomatoes | Transplant outdoors | Mar 12 – Aug 12 |
| Peppers | Start seeds indoors | Jan 24 – Feb 24 |
| Peppers | Transplant outdoors | Mar 26 – Apr 26 |
| Eggplant | Start seeds indoors | Feb 10 – Mar 11 |
| Eggplant | Transplant outdoors | Mar 26 – Apr 26 |
| Cucumbers | Sow outdoors | Mar 26 – Aug 22 |
| Summer squash | Sow outdoors | Mar 12 – Apr 26 |
| Winter squash & pumpkins | Sow outdoors | Mar 26 – Apr 26 |
| Snap beans | Sow outdoors | Mar 12 – Sep 14 |
| Sweet corn | Sow outdoors | Mar 12 – Aug 12 |
| Watermelon & cantaloupe | Sow outdoors | Mar 26 – Apr 26 |
| Okra | Sow outdoors | Mar 19 – Apr 11 |
| Peas | Sow outdoors (spring) | Jan 24 – Mar 11 |
| Potatoes | Plant outdoors (spring) | Jan 24 – Mar 26 |
| Onions | Start seeds indoors (spring) | Dec 13 – Jan 9 |
| Onions | Transplant outdoors (spring) | Feb 10 – Mar 11 |
| Broccoli | Start seeds indoors (spring) | Jan 6 – Feb 9 |
| Broccoli | Transplant outdoors (spring) | Feb 10 – Mar 11 |
| Broccoli | Start seeds indoors (fall) | Aug 2 – Aug 12 |
| Broccoli | Transplant outdoors (fall) | Sep 1 – Sep 12 |
| Cabbage | Start seeds indoors (spring) | Dec 27 – Jan 24 |
| Cabbage | Transplant outdoors (spring) | Jan 24 – Feb 24 |
| Cabbage | Start seeds indoors (fall) | Jul 23 – Aug 22 |
| Cabbage | Transplant outdoors (fall) | Aug 22 – Sep 22 |
| Leaf lettuce | Sow outdoors (spring) | Jan 24 – Apr 11 |
| Leaf lettuce | Sow outdoors (fall) | Aug 22 – Oct 8 |
| Spinach | Sow outdoors (spring) | Jan 17 – Mar 2 |
| Spinach | Sow outdoors (fall) | Sep 8 – Oct 13 |
| Radishes | Sow outdoors (spring) | Jan 24 – Mar 16 |
| Radishes | Sow outdoors (fall) | Aug 22 – Oct 23 |
| Kale | Sow outdoors (spring) | Feb 10 – Mar 2 |
| Kale | Sow outdoors (fall) | Aug 15 – Sep 22 |
| Carrots | Sow outdoors (spring) | Feb 24 – Apr 11 |
| Carrots | Sow outdoors (fall) | Jul 23 – Sep 7 |
| Garlic | Plant outdoors (fall) | Nov 22 – Dec 23 |
Where these dates come from
ZIP code 78002 is matched to the NOAA station Lytle 3W, TX, 10.5 km away, at 722 ft elevation (53 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Lytle 3W, TX (used) | 722 ft | Feb 24 | Dec 2 |
| San Antonio Kelly Afb, TX | 682 ft | Feb 22 | Dec 2 |
| San Antonio/Seaworld, TX | 940 ft | Feb 18 | Dec 9 |
| San Antonio Stinson Ap, TX | 571 ft | Feb 20 | Dec 3 |
Frost dates near Atascosa
- Lytle, TX 78052 · last Feb 24, first Dec 2
- Von Ormy, TX 78073 · last Feb 20, first Dec 3
- Macdona, TX 78054 · last Feb 20, first Dec 3
- La Coste, TX 78039 · last Feb 24, first Dec 2
- Somerset, TX 78069 · last Feb 20, first Dec 3
- San Antonio, TX 78252 · last Feb 20, first Dec 3
- Natalia, TX 78059 · last Feb 24, first Dec 2
- Castroville, TX 78009 · last Feb 28, first Nov 27
Frequently asked questions
- When is the last frost in Atascosa, TX?
- For ZIP code 78002, the average last spring frost (32°F) is February 24, based on NOAA 1991-2020 climate normals for the Lytle 3W, TX weather station. There is a 1-in-10 chance of a frost after March 14.
- When is the first frost in Atascosa, TX?
- The average first fall frost (32°F) is December 2. There is a 1-in-10 chance of frost by November 14, so tender plants are at risk from that point on.
- How long is the growing season in 78002?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 283 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.