Frost dates for 78662Red Rock, TX
The average last spring frost in Red Rock is March 14 and the average first fall frost is November 19, giving a typical growing season of about 250 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 14
- Average first fall frost
- Nov 19
- Growing season
- 250 days
Safer after Apr 3 (1-in-10 risk)
Possible by Oct 31 (1-in-10 risk)
First frost typically in 24 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) | Mar 6 · Mar 26 · Apr 13 | Oct 23 · Nov 6 · Nov 27 | 226 days | 100% |
| Frost / freeze (32°F) | Feb 22 · Mar 14 · Apr 3 | Oct 31 · Nov 19 · Dec 8 | 250 days | 100% |
| Hard freeze (28°F) | Jan 29 · Mar 2 · Mar 22 | Nov 10 · Dec 1 · Dec 31 | 275 days | 100% |
Planting calendar for Red Rock
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 | Feb 11 – Apr 19 |
| Tomatoes | Transplant outdoors | Mar 30 – Jul 30 |
| Peppers | Start seeds indoors | Feb 11 – Mar 14 |
| Peppers | Transplant outdoors | Apr 13 – May 14 |
| Eggplant | Start seeds indoors | Feb 28 – Mar 29 |
| Eggplant | Transplant outdoors | Apr 13 – May 14 |
| Cucumbers | Sow outdoors | Apr 13 – Aug 9 |
| Summer squash | Sow outdoors | Mar 30 – May 14 |
| Winter squash & pumpkins | Sow outdoors | Apr 13 – May 14 |
| Snap beans | Sow outdoors | Mar 30 – Sep 1 |
| Sweet corn | Sow outdoors | Mar 30 – Jul 30 |
| Watermelon & cantaloupe | Sow outdoors | Apr 13 – May 14 |
| Okra | Sow outdoors | Apr 6 – Apr 29 |
| Peas | Sow outdoors (spring) | Feb 11 – Mar 29 |
| Potatoes | Plant outdoors (spring) | Feb 11 – Apr 13 |
| Onions | Start seeds indoors (spring) | Dec 31 – Jan 27 |
| Onions | Transplant outdoors (spring) | Feb 28 – Mar 29 |
| Broccoli | Start seeds indoors (spring) | Jan 24 – Feb 27 |
| Broccoli | Transplant outdoors (spring) | Feb 28 – Mar 29 |
| Broccoli | Start seeds indoors (fall) | Jul 20 – Jul 30 |
| Broccoli | Transplant outdoors (fall) | Aug 19 – Aug 30 |
| Cabbage | Start seeds indoors (spring) | Jan 14 – Feb 11 |
| Cabbage | Transplant outdoors (spring) | Feb 11 – Mar 14 |
| Cabbage | Start seeds indoors (fall) | Jul 10 – Aug 9 |
| Cabbage | Transplant outdoors (fall) | Aug 9 – Sep 9 |
| Leaf lettuce | Sow outdoors (spring) | Feb 11 – Apr 29 |
| Leaf lettuce | Sow outdoors (fall) | Aug 9 – Sep 25 |
| Spinach | Sow outdoors (spring) | Feb 4 – Mar 20 |
| Spinach | Sow outdoors (fall) | Aug 26 – Sep 30 |
| Radishes | Sow outdoors (spring) | Feb 11 – Apr 3 |
| Radishes | Sow outdoors (fall) | Aug 9 – Oct 10 |
| Kale | Sow outdoors (spring) | Feb 28 – Mar 20 |
| Kale | Sow outdoors (fall) | Aug 2 – Sep 9 |
| Carrots | Sow outdoors (spring) | Mar 14 – Apr 29 |
| Carrots | Sow outdoors (fall) | Jul 10 – Aug 25 |
| Garlic | Plant outdoors (fall) | Nov 9 – Dec 10 |
Where these dates come from
ZIP code 78662 is matched to the NOAA station Cedar Creek 5 S, TX, 7.4 km away, at 436 ft elevation (19 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Cedar Creek 5 S, TX (used) | 436 ft | Mar 14 | Nov 19 |
| Smithville, TX | 317 ft | Mar 12 | Nov 19 |
| Austin Bergstrom Ap, TX | 480 ft | Mar 12 | Nov 16 |
| Austin 6S, TX | 570 ft | Mar 10 | Nov 17 |
Frost dates near Red Rock
- Rosanky, TX 78953 · last Mar 12, first Nov 19
- Cedar Creek, TX 78612 · last Mar 12, first Nov 16
- Dale, TX 78616 · last Mar 12, first Nov 16
- Bastrop, TX 78602 · last Mar 12, first Nov 19
- Smithville, TX 78957 · last Mar 12, first Nov 19
- Lockhart, TX 78644 · last Mar 5, first Nov 23
- Del Valle, TX 78617 · last Mar 12, first Nov 16
- Austin, TX 78719 · last Mar 12, first Nov 16
Frequently asked questions
- When is the last frost in Red Rock, TX?
- For ZIP code 78662, the average last spring frost (32°F) is March 14, based on NOAA 1991-2020 climate normals for the Cedar Creek 5 S, TX weather station. There is a 1-in-10 chance of a frost after April 3.
- When is the first frost in Red Rock, TX?
- The average first fall frost (32°F) is November 19. There is a 1-in-10 chance of frost by October 31, so tender plants are at risk from that point on.
- How long is the growing season in 78662?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 250 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.