Frost dates for 78671Stonewall, TX
The average last spring frost in Stonewall is March 18 and the average first fall frost is November 10, giving a typical growing season of about 235 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 18
- Average first fall frost
- Nov 10
- Growing season
- 235 days
Safer after Apr 9 (1-in-10 risk)
Possible by Oct 27 (1-in-10 risk)
First frost typically in 7 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 13 · Apr 3 · Apr 20 | Oct 17 · Nov 1 · Nov 15 | 211 days | 100% |
| Frost / freeze (32°F) | Feb 27 · Mar 18 · Apr 9 | Oct 27 · Nov 10 · Nov 28 | 235 days | 100% |
| Hard freeze (28°F) | Feb 13 · Mar 4 · Mar 24 | Nov 2 · Nov 22 · Dec 11 | 259 days | 100% |
Planting calendar for Stonewall
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 15 – Apr 23 |
| Tomatoes | Transplant outdoors | Apr 3 – Jul 21 |
| Peppers | Start seeds indoors | Feb 15 – Mar 18 |
| Peppers | Transplant outdoors | Apr 17 – May 18 |
| Eggplant | Start seeds indoors | Mar 4 – Apr 2 |
| Eggplant | Transplant outdoors | Apr 17 – May 18 |
| Cucumbers | Sow outdoors | Apr 17 – Jul 31 |
| Summer squash | Sow outdoors | Apr 3 – May 18 |
| Winter squash & pumpkins | Sow outdoors | Apr 17 – May 18 |
| Snap beans | Sow outdoors | Apr 3 – Aug 23 |
| Sweet corn | Sow outdoors | Apr 3 – Jul 21 |
| Watermelon & cantaloupe | Sow outdoors | Apr 17 – May 18 |
| Okra | Sow outdoors | Apr 10 – May 3 |
| Peas | Sow outdoors (spring) | Feb 15 – Apr 2 |
| Potatoes | Plant outdoors (spring) | Feb 15 – Apr 17 |
| Onions | Start seeds indoors (spring) | Jan 4 – Jan 31 |
| Onions | Transplant outdoors (spring) | Mar 4 – Apr 2 |
| Broccoli | Start seeds indoors (spring) | Jan 28 – Mar 3 |
| Broccoli | Transplant outdoors (spring) | Mar 4 – Apr 2 |
| Broccoli | Start seeds indoors (fall) | Jul 11 – Jul 21 |
| Broccoli | Transplant outdoors (fall) | Aug 10 – Aug 21 |
| Cabbage | Start seeds indoors (spring) | Jan 18 – Feb 15 |
| Cabbage | Transplant outdoors (spring) | Feb 15 – Mar 18 |
| Cabbage | Start seeds indoors (fall) | Jul 1 – Jul 31 |
| Cabbage | Transplant outdoors (fall) | Jul 31 – Aug 31 |
| Leaf lettuce | Sow outdoors (spring) | Feb 15 – May 3 |
| Leaf lettuce | Sow outdoors (fall) | Jul 31 – Sep 16 |
| Spinach | Sow outdoors (spring) | Feb 8 – Mar 24 |
| Spinach | Sow outdoors (fall) | Aug 17 – Sep 21 |
| Radishes | Sow outdoors (spring) | Feb 15 – Apr 7 |
| Radishes | Sow outdoors (fall) | Jul 31 – Oct 1 |
| Kale | Sow outdoors (spring) | Mar 4 – Mar 24 |
| Kale | Sow outdoors (fall) | Jul 24 – Aug 31 |
| Carrots | Sow outdoors (spring) | Mar 18 – May 3 |
| Carrots | Sow outdoors (fall) | Jul 1 – Aug 16 |
| Garlic | Plant outdoors (fall) | Oct 31 – Dec 1 |
Where these dates come from
ZIP code 78671 is matched to the NOAA station Fredericksburg, TX, 28.6 km away, at 1,685 ft elevation (100 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Fredericksburg, TX (used) | 1,685 ft | Mar 18 | Nov 10 |
| Johnson City 2N, TX | 1,137 ft | Mar 22 | Nov 9 |
| Blanco, TX | 1,310 ft | Mar 20 | Nov 10 |
| Boerne, TX | 1,445 ft | Mar 15 | Nov 13 |
Frost dates near Stonewall
- Hye, TX 78635 · last Mar 20, first Nov 10
- Blanco, TX 78606 · last Mar 20, first Nov 10
- Johnson City, TX 78636 · last Mar 22, first Nov 9
- Fredericksburg, TX 78624 · last Mar 18, first Nov 10
- Willow City, TX 78675 · last Mar 22, first Nov 9
- Round Mountain, TX 78663 · last Mar 22, first Nov 9
- Kendalia, TX 78027 · last Mar 20, first Nov 10
- Waring, TX 78074 · last Mar 15, first Nov 13
Frequently asked questions
- When is the last frost in Stonewall, TX?
- For ZIP code 78671, the average last spring frost (32°F) is March 18, based on NOAA 1991-2020 climate normals for the Fredericksburg, TX weather station. There is a 1-in-10 chance of a frost after April 9.
- When is the first frost in Stonewall, TX?
- The average first fall frost (32°F) is November 10. There is a 1-in-10 chance of frost by October 27, so tender plants are at risk from that point on.
- How long is the growing season in 78671?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 235 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.