Frost dates for 77964Hallettsville, TX
The average last spring frost in Hallettsville is February 17 and the average first fall frost is December 4, giving a typical growing season of about 297 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Feb 17
- Average first fall frost
- Dec 4
- Growing season
- 297 days
Safer after Mar 13 (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 9 · Mar 5 · Mar 29 | Nov 4 · Nov 23 · Dec 12 | 263 days | 100% |
| Frost / freeze (32°F) | Jan 19 · Feb 17 · Mar 13 | Nov 14 · Dec 4 · Jan 8 | 297 days | 100% |
| Hard freeze (28°F) | Dec 24 · Jan 30 · Feb 28 | Nov 28 · Dec 27 · Feb 3 | 331 days | 86% |
Planting calendar for Hallettsville
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 17 – Mar 25 |
| Tomatoes | Transplant outdoors | Mar 5 – Aug 14 |
| Peppers | Start seeds indoors | Jan 17 – Feb 17 |
| Peppers | Transplant outdoors | Mar 19 – Apr 19 |
| Eggplant | Start seeds indoors | Feb 3 – Mar 4 |
| Eggplant | Transplant outdoors | Mar 19 – Apr 19 |
| Cucumbers | Sow outdoors | Mar 19 – Aug 24 |
| Summer squash | Sow outdoors | Mar 5 – Apr 19 |
| Winter squash & pumpkins | Sow outdoors | Mar 19 – Apr 19 |
| Snap beans | Sow outdoors | Mar 5 – Sep 16 |
| Sweet corn | Sow outdoors | Mar 5 – Aug 14 |
| Watermelon & cantaloupe | Sow outdoors | Mar 19 – Apr 19 |
| Okra | Sow outdoors | Mar 12 – Apr 4 |
| Peas | Sow outdoors (spring) | Jan 17 – Mar 4 |
| Potatoes | Plant outdoors (spring) | Jan 17 – Mar 19 |
| Onions | Start seeds indoors (spring) | Dec 6 – Jan 2 |
| Onions | Transplant outdoors (spring) | Feb 3 – Mar 4 |
| Broccoli | Start seeds indoors (spring) | Dec 30 – Feb 2 |
| Broccoli | Transplant outdoors (spring) | Feb 3 – Mar 4 |
| Broccoli | Start seeds indoors (fall) | Aug 4 – Aug 14 |
| Broccoli | Transplant outdoors (fall) | Sep 3 – Sep 14 |
| Cabbage | Start seeds indoors (spring) | Dec 20 – Jan 17 |
| Cabbage | Transplant outdoors (spring) | Jan 17 – Feb 17 |
| Cabbage | Start seeds indoors (fall) | Jul 25 – Aug 24 |
| Cabbage | Transplant outdoors (fall) | Aug 24 – Sep 24 |
| Leaf lettuce | Sow outdoors (spring) | Jan 17 – Apr 4 |
| Leaf lettuce | Sow outdoors (fall) | Aug 24 – Oct 10 |
| Spinach | Sow outdoors (spring) | Jan 10 – Feb 23 |
| Spinach | Sow outdoors (fall) | Sep 10 – Oct 15 |
| Radishes | Sow outdoors (spring) | Jan 17 – Mar 9 |
| Radishes | Sow outdoors (fall) | Aug 24 – Oct 25 |
| Kale | Sow outdoors (spring) | Feb 3 – Feb 23 |
| Kale | Sow outdoors (fall) | Aug 17 – Sep 24 |
| Carrots | Sow outdoors (spring) | Feb 17 – Apr 4 |
| Carrots | Sow outdoors (fall) | Jul 25 – Sep 9 |
| Garlic | Plant outdoors (fall) | Nov 24 – Dec 25 |
Where these dates come from
ZIP code 77964 is matched to the NOAA station Hallettsville 2 N, TX, 3.5 km away, at 275 ft elevation (19 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Hallettsville 2 N, TX (used) | 275 ft | Feb 17 | Dec 4 |
| Flatonia 4Se, TX | 470 ft | Mar 2 | Nov 27 |
| Yoakum, TX | 295 ft | Mar 2 | Nov 30 |
| Columbus, TX | 225 ft | Mar 9 | Nov 20 |
Frost dates near Hallettsville
- Sublime, TX 77986 · last Feb 17, first Dec 4
- Sweet Home, TX 77987 · last Mar 2, first Nov 30
- Oakland, TX 78951 · last Feb 17, first Dec 4
- Moulton, TX 77975 · last Mar 2, first Nov 27
- Shiner, TX 77984 · last Mar 2, first Nov 30
- Sheridan, TX 77475 · last Feb 17, first Dec 4
- Yoakum, TX 77995 · last Mar 2, first Nov 30
- Schulenburg, TX 78956 · last Mar 2, first Nov 27
Frequently asked questions
- When is the last frost in Hallettsville, TX?
- For ZIP code 77964, the average last spring frost (32°F) is February 17, based on NOAA 1991-2020 climate normals for the Hallettsville 2 N, TX weather station. There is a 1-in-10 chance of a frost after March 13.
- When is the first frost in Hallettsville, TX?
- The average first fall frost (32°F) is December 4. 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 77964?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 297 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.