Hutto, TX 78634 Frost Dates
Frost dates for Hutto, TX, ZIP 78634
Typically, the last spring freeze lands around 03/08, roughly 192 days out. The first fall frost typically arrives around 11/21, about 257 frost-free days later.
The USDA Plant Hardiness Zone Map puts Hutto in Zone 9a (20 to 25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 9a around Hutto has about 12 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 03/08 isn't a guarantee
03/08 is the middle of 30 years of NOAA records, not a promise. Plant by 02/14 and you're betting against frost in roughly 9 years out of 10. 03/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hutto compares
About 257 days separate Hutto's last and first frost, putting it 6,676 of 40,283 ZIP codes nationally. Within TX, it ranks 1,428 of 2,558.
Learn more
local microclimates explains what one yard in Hutto can differ from the 78634 normal, and zone vs. frost date explains why Zone 9a and Hutto's frost date answer different questions.