Tira, TX 75437 Frost Dates
Frost dates for Tira, TX, ZIP 75437
Typically, the last spring freeze lands around 03/18, roughly 202 days out. The first fall frost typically arrives around 11/13, about 241 frost-free days later.
Tira sits in USDA Zone 8b (15 to 20°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
Zone 8b around Tira has about 11 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
03/18 is the middle of 30 years of NOAA records, not a promise. Plant by 03/01 and you're betting against frost in roughly 9 years out of 10. 04/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Tira compares
About 241 days separate Tira's last and first frost, putting it 8,619 of 40,283 ZIP codes nationally. Within TX, it ranks 1,919 of 2,558.
Learn more
local microclimates explains what one yard in Tira can differ from the 75437 normal, and zone vs. frost date explains why Zone 8b and Tira's frost date answer different questions.