Three Rivers, TX 78007 Frost Dates
Frost dates for Three Rivers, TX, ZIP 78007
Around 02/13 is the usual last spring frost, about 169 days away. The first fall frost typically arrives around 12/03, about 299 frost-free days later.
The USDA Plant Hardiness Zone Map puts Three Rivers 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 Three Rivers 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.
Why 02/13 isn't a guarantee
02/13 is the middle of 30 years of NOAA records, not a promise. Plant by 01/08 and you're betting against frost in roughly 9 years out of 10. 03/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Three Rivers compares
About 299 days separate Three Rivers's last and first frost, putting it 4,174 of 40,283 ZIP codes nationally. Within TX, it ranks 481 of 2,558.
Learn more
the frost range explains how to read the range around Three Rivers's dates instead of trusting one, and local microclimates explains what one yard in Three Rivers can differ from the 78007 normal.