Uvalde, TX 78802 Frost Dates
Frost dates for Uvalde, TX, ZIP 78802
Typically, the last spring freeze lands around 03/12, roughly 196 days out. The first fall frost typically arrives around 11/14, about 248 frost-free days later.
The USDA Plant Hardiness Zone Map puts Uvalde 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 Uvalde has about 11 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 03/12 isn't a guarantee
03/12 is the middle of 30 years of NOAA records, not a promise. Plant by 02/20 and you're betting against frost in roughly 9 years out of 10. 04/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Uvalde compares
At roughly 248 frost-free days, Uvalde places 7,683 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,736 of 2,558.
Learn more
the frost range explains how to read the range around Uvalde's dates instead of trusting one, and local microclimates explains what one yard in Uvalde can differ from the 78802 normal.