Blanco, TX 78606 Frost Dates
Frost dates for Blanco, TX, ZIP 78606
Around 03/01 is the usual last spring frost, about 185 days away. The first fall frost typically arrives around 12/01, about 276 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 Blanco, not a forecast for this year.
What to do before the first frost
Zone 8b around Blanco has about 14 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
03/01 is the middle of 30 years of NOAA records, not a promise. Plant by 01/31 and you're betting against frost in roughly 9 years out of 10. 03/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Blanco compares
Blanco's growing season runs about 276 days, ranking 5,111 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 840 of 2,558.
Learn more
the frost range explains how to read the range around Blanco's dates instead of trusting one, and local microclimates explains what one yard in Blanco can differ from the 78606 normal.