Austwell, TX 77973 Frost Dates
Frost dates for Austwell, TX, ZIP 77973
Around 01/30 is the usual last spring frost, about 155 days away. The first fall frost typically arrives around 12/27, about 333 frost-free days later.
Zone 9b (25 to 30°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 Austwell, not a forecast for this year.
What to do before the first frost
Zone 9b around Austwell has about 17 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
01/30 is the middle of 30 years of NOAA records, not a promise. Plant by 03/02 and you're betting against frost in roughly 9 years out of 10. 12/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Austwell compares
About 333 days separate Austwell's last and first frost, putting it 2,856 of 40,283 ZIP codes nationally. Within TX, it ranks 113 of 2,558.
Learn more
local microclimates explains what one yard in Austwell can differ from the 77973 normal, and zone vs. frost date explains why Zone 9b and Austwell's frost date answer different questions.