Three Rivers, TX 78072 Frost Dates
Frost dates for Three Rivers, TX, ZIP 78072
Typically, the last spring freeze lands around 02/13, roughly 169 days out. 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 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 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.
How much risk comes with planting early here
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
Three Rivers's growing season runs about 299 days, ranking 4,176 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 483 of 2,558.
Learn more
local microclimates explains what one yard in Three Rivers can differ from the 78072 normal, and zone vs. frost date explains why Zone 9a and Three Rivers's frost date answer different questions.