Anahuac, TX 77597 Frost Dates
Frost dates for Anahuac, TX, ZIP 77597
Typically, the last spring freeze lands around 02/20, roughly 176 days out. The first fall frost typically arrives around 12/04, about 292 frost-free days later.
The USDA Plant Hardiness Zone Map puts Anahuac in Zone 9b (25 to 30°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 9b around Anahuac 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 Anahuac compares
About 292 days separate Anahuac's last and first frost, putting it 4,367 of 40,283 ZIP codes nationally. Within TX, it ranks 544 of 2,558.
Learn more
zone vs. frost date explains why Zone 9b and Anahuac's frost date answer different questions, and the frost range explains how to read the range around Anahuac's dates instead of trusting one.