Austin, TX 78755 Frost Dates
Frost dates for Austin, TX, ZIP 78755
The last spring frost here typically falls around 02/20, about 176 days from today. The first fall frost typically arrives around 12/03, about 291 frost-free days later.
Zone 9a (20 to 25°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 Austin, not a forecast for this year.
What to do before the first frost
Zone 9a around Austin 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
02/20 is the middle of 30 years of NOAA records, not a promise. Plant by 01/23 and you're betting against frost in roughly 9 years out of 10. 03/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Austin compares
About 291 days separate Austin's last and first frost, putting it 4,411 of 40,283 ZIP codes nationally. Within TX, it ranks 573 of 2,558.
Learn more
zone vs. frost date explains why Zone 9a and Austin's frost date answer different questions, and the frost range explains how to read the range around Austin's dates instead of trusting one.