Frost dates for 78841Del Rio, TX
The average last spring frost in Del Rio is February 16 and the average first fall frost is December 3, giving a typical growing season of about 293 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Feb 16
- Average first fall frost
- Dec 3
- Growing season
- 293 days
Safer after Mar 10 (1-in-10 risk)
Possible by Nov 14 (1-in-10 risk)
First frost typically in 38 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 10 · Mar 3 · Mar 24 | Nov 4 · Nov 20 · Dec 5 | 262 days | 100% |
| Frost / freeze (32°F) | Jan 19 · Feb 16 · Mar 10 | Nov 14 · Dec 3 · Dec 26 | 293 days | 100% |
| Hard freeze (28°F) | Dec 23 · Jan 24 · Feb 26 | Nov 27 · Dec 18 · Jan 19 | 329 days | 91% |
Planting calendar for Del Rio
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 16 – Mar 24 |
| Tomatoes | Transplant outdoors | Mar 4 – Aug 13 |
| Peppers | Start seeds indoors | Jan 16 – Feb 16 |
| Peppers | Transplant outdoors | Mar 18 – Apr 18 |
| Eggplant | Start seeds indoors | Feb 2 – Mar 3 |
| Eggplant | Transplant outdoors | Mar 18 – Apr 18 |
| Cucumbers | Sow outdoors | Mar 18 – Aug 23 |
| Summer squash | Sow outdoors | Mar 4 – Apr 18 |
| Winter squash & pumpkins | Sow outdoors | Mar 18 – Apr 18 |
| Snap beans | Sow outdoors | Mar 4 – Sep 15 |
| Sweet corn | Sow outdoors | Mar 4 – Aug 13 |
| Watermelon & cantaloupe | Sow outdoors | Mar 18 – Apr 18 |
| Okra | Sow outdoors | Mar 11 – Apr 3 |
| Peas | Sow outdoors (spring) | Jan 16 – Mar 3 |
| Potatoes | Plant outdoors (spring) | Jan 16 – Mar 18 |
| Onions | Start seeds indoors (spring) | Dec 5 – Jan 1 |
| Onions | Transplant outdoors (spring) | Feb 2 – Mar 3 |
| Broccoli | Start seeds indoors (spring) | Dec 29 – Feb 1 |
| Broccoli | Transplant outdoors (spring) | Feb 2 – Mar 3 |
| Broccoli | Start seeds indoors (fall) | Aug 3 – Aug 13 |
| Broccoli | Transplant outdoors (fall) | Sep 2 – Sep 13 |
| Cabbage | Start seeds indoors (spring) | Dec 19 – Jan 16 |
| Cabbage | Transplant outdoors (spring) | Jan 16 – Feb 16 |
| Cabbage | Start seeds indoors (fall) | Jul 24 – Aug 23 |
| Cabbage | Transplant outdoors (fall) | Aug 23 – Sep 23 |
| Leaf lettuce | Sow outdoors (spring) | Jan 16 – Apr 3 |
| Leaf lettuce | Sow outdoors (fall) | Aug 23 – Oct 9 |
| Spinach | Sow outdoors (spring) | Jan 9 – Feb 22 |
| Spinach | Sow outdoors (fall) | Sep 9 – Oct 14 |
| Radishes | Sow outdoors (spring) | Jan 16 – Mar 8 |
| Radishes | Sow outdoors (fall) | Aug 23 – Oct 24 |
| Kale | Sow outdoors (spring) | Feb 2 – Feb 22 |
| Kale | Sow outdoors (fall) | Aug 16 – Sep 23 |
| Carrots | Sow outdoors (spring) | Feb 16 – Apr 3 |
| Carrots | Sow outdoors (fall) | Jul 24 – Sep 8 |
| Garlic | Plant outdoors (fall) | Nov 23 – Dec 24 |
Where these dates come from
ZIP code 78841 is matched to the NOAA station Del Rio Intl Ap, TX, 3.5 km away, at 999 ft elevation (80 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Del Rio Intl Ap, TX (used) | 999 ft | Feb 16 | Dec 3 |
| Del Rio 4Nw, TX | 1,051 ft | Feb 19 | Dec 4 |
| Amistad Dam, TX | 1,157 ft | Feb 14 | Dec 6 |
| Brackettville, TX | 1,120 ft | Mar 5 | Nov 24 |
Frost dates near Del Rio
- Laughlin Afb, TX 78843 · last Feb 16, first Dec 3
- Del Rio, TX 78847 · last Feb 16, first Dec 3
- Brackettville, TX 78832 · last Mar 5, first Nov 24
- Comstock, TX 78837 · last Mar 10, first Nov 16
- Quemado, TX 78877 · last Feb 19, first Dec 1
- Langtry, TX 78871 · last Feb 27, first Nov 27
- Eagle Pass, TX 78852 · last Feb 19, first Dec 1
- Barksdale, TX 78828 · last Mar 12, first Nov 14
Frequently asked questions
- When is the last frost in Del Rio, TX?
- For ZIP code 78841, the average last spring frost (32°F) is February 16, based on NOAA 1991-2020 climate normals for the Del Rio Intl Ap, TX weather station. There is a 1-in-10 chance of a frost after March 10.
- When is the first frost in Del Rio, TX?
- The average first fall frost (32°F) is December 3. 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 78841?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 293 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.