Blackwell, TX 79537 Frost Dates
When can you plant in Blackwell, TX?
Around 04/02 is the usual last spring frost, about 217 days away. The first fall frost typically arrives around 11/03, about 215 frost-free days later.
Blackwell sits in USDA Zone 8a (10 to 15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 10 weeks of growing season left in Blackwell before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Blackwell's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/15 and you're betting against frost in roughly 9 years out of 10. 04/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Blackwell compares
About 215 days separate Blackwell's last and first frost, putting it 14,193 of 40,283 ZIP codes nationally. Within TX, it ranks 2,356 of 2,558.
Learn more
zone vs. frost date covers why Zone 8a and Blackwell's frost date answer different questions. the frost range covers how to read the range around Blackwell's dates instead of trusting one.