Boerne, TX 78006 Frost Dates
Frost dates for Boerne, TX, ZIP 78006
Typically, the last spring freeze lands around 02/26, roughly 182 days out. The first fall frost typically arrives around 11/28, about 277 frost-free days later.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Boerne, not a forecast for this year.
What to do before the first frost
Zone 8b around Boerne has about 13 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.
Why 02/26 isn't a guarantee
02/26 is the middle of 30 years of NOAA records, not a promise. Plant by 01/29 and you're betting against frost in roughly 9 years out of 10. 03/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Boerne compares
About 277 days separate Boerne's last and first frost, putting it 4,967 of 40,283 ZIP codes nationally. Within TX, it ranks 773 of 2,558.
Learn more
local microclimates explains what one yard in Boerne can differ from the 78006 normal, and zone vs. frost date explains why Zone 8b and Boerne's frost date answer different questions.