Grey Forest, TX 78257 Frost Dates
Frost dates for Grey Forest, TX, ZIP 78257
Typically, the last spring freeze lands around 02/26, roughly 182 days out. The first fall frost typically arrives around 11/28, about 277 frost-free days later.
Grey Forest sits in USDA Zone 9a (20 to 25°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 9a around Grey Forest has about 13 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.
The actual range around Grey Forest's last frost
02/26 is the middle of 30 years of NOAA records, not a promise. Plant by 01/29 and you're betting against frost in roughly 9 years out of 10. 03/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Grey Forest compares
About 277 days separate Grey Forest's last and first frost, putting it 5,037 of 40,283 ZIP codes nationally. Within TX, it ranks 827 of 2,558.
Learn more
local microclimates explains what one yard in Grey Forest can differ from the 78257 normal, and zone vs. frost date explains why Zone 9a and Grey Forest's frost date answer different questions.