Frost dates for 76930Barnhart, TX
The average last spring frost in Barnhart is March 20 and the average first fall frost is November 14, giving a typical growing season of about 238 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 20
- Average first fall frost
- Nov 14
- Growing season
- 238 days
Safer after Apr 10 (1-in-10 risk)
Possible by Oct 30 (1-in-10 risk)
First frost typically in 19 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 17 · Apr 5 · Apr 24 | Oct 19 · Nov 4 · Nov 20 | 212 days | 100% |
| Frost / freeze (32°F) | Feb 28 · Mar 20 · Apr 10 | Oct 30 · Nov 14 · Dec 2 | 238 days | 100% |
| Hard freeze (28°F) | Feb 10 · Mar 4 · Mar 26 | Nov 7 · Nov 25 · Dec 17 | 265 days | 100% |
Planting calendar for Barnhart
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 17 – Apr 25 |
| Tomatoes | Transplant outdoors | Apr 5 – Jul 25 |
| Peppers | Start seeds indoors | Feb 17 – Mar 20 |
| Peppers | Transplant outdoors | Apr 19 – May 20 |
| Eggplant | Start seeds indoors | Mar 6 – Apr 4 |
| Eggplant | Transplant outdoors | Apr 19 – May 20 |
| Cucumbers | Sow outdoors | Apr 19 – Aug 4 |
| Summer squash | Sow outdoors | Apr 5 – May 20 |
| Winter squash & pumpkins | Sow outdoors | Apr 19 – May 20 |
| Snap beans | Sow outdoors | Apr 5 – Aug 27 |
| Sweet corn | Sow outdoors | Apr 5 – Jul 25 |
| Watermelon & cantaloupe | Sow outdoors | Apr 19 – May 20 |
| Okra | Sow outdoors | Apr 12 – May 5 |
| Peas | Sow outdoors (spring) | Feb 17 – Apr 4 |
| Potatoes | Plant outdoors (spring) | Feb 17 – Apr 19 |
| Onions | Start seeds indoors (spring) | Jan 6 – Feb 2 |
| Onions | Transplant outdoors (spring) | Mar 6 – Apr 4 |
| Broccoli | Start seeds indoors (spring) | Jan 30 – Mar 5 |
| Broccoli | Transplant outdoors (spring) | Mar 6 – Apr 4 |
| Broccoli | Start seeds indoors (fall) | Jul 15 – Jul 25 |
| Broccoli | Transplant outdoors (fall) | Aug 14 – Aug 25 |
| Cabbage | Start seeds indoors (spring) | Jan 20 – Feb 17 |
| Cabbage | Transplant outdoors (spring) | Feb 17 – Mar 20 |
| Cabbage | Start seeds indoors (fall) | Jul 5 – Aug 4 |
| Cabbage | Transplant outdoors (fall) | Aug 4 – Sep 4 |
| Leaf lettuce | Sow outdoors (spring) | Feb 17 – May 5 |
| Leaf lettuce | Sow outdoors (fall) | Aug 4 – Sep 20 |
| Spinach | Sow outdoors (spring) | Feb 10 – Mar 26 |
| Spinach | Sow outdoors (fall) | Aug 21 – Sep 25 |
| Radishes | Sow outdoors (spring) | Feb 17 – Apr 9 |
| Radishes | Sow outdoors (fall) | Aug 4 – Oct 5 |
| Kale | Sow outdoors (spring) | Mar 6 – Mar 26 |
| Kale | Sow outdoors (fall) | Jul 28 – Sep 4 |
| Carrots | Sow outdoors (spring) | Mar 20 – May 5 |
| Carrots | Sow outdoors (fall) | Jul 5 – Aug 20 |
| Garlic | Plant outdoors (fall) | Nov 4 – Dec 5 |
Where these dates come from
ZIP code 76930 is matched to the NOAA station Big Lake 2, TX, 26.1 km away, at 2,734 ft elevation (122 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Big Lake 2, TX (used) | 2,734 ft | Mar 20 | Nov 14 |
| Cope Rch, TX | 2,480 ft | Apr 9 | Oct 31 |
| Mertzon 12Nnw, TX | 2,205 ft | Apr 1 | Nov 4 |
| Ozona, TX | 2,345 ft | Mar 21 | Nov 6 |
Frost dates near Barnhart
- Mertzon, TX 76941 · last Apr 1, first Nov 4
- Big Lake, TX 76932 · last Apr 9, first Oct 31
- Ozona, TX 76943 · last Mar 21, first Nov 6
- Knickerbocker, TX 76939 · last Mar 22, first Nov 10
- Christoval, TX 76935 · last Mar 22, first Nov 10
- Eldorado, TX 76936 · last Mar 22, first Nov 10
- Water Valley, TX 76958 · last Apr 6, first Nov 2
- Carlsbad, TX 76934 · last Apr 6, first Nov 2
Frequently asked questions
- When is the last frost in Barnhart, TX?
- For ZIP code 76930, the average last spring frost (32°F) is March 20, based on NOAA 1991-2020 climate normals for the Big Lake 2, TX weather station. There is a 1-in-10 chance of a frost after April 10.
- When is the first frost in Barnhart, TX?
- The average first fall frost (32°F) is November 14. There is a 1-in-10 chance of frost by October 30, so tender plants are at risk from that point on.
- How long is the growing season in 76930?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 238 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.