Leon Valley, TX 78236 Frost Dates
Frost dates for Leon Valley, TX, ZIP 78236
Typically, the last spring freeze lands around 02/22, roughly 178 days out. The first fall frost typically arrives around 12/02, about 284 frost-free days later.
The USDA Plant Hardiness Zone Map puts Leon Valley 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 Leon Valley 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 02/22 isn't a guarantee
02/22 is the middle of 30 years of NOAA records, not a promise. Plant by 01/16 and you're betting against frost in roughly 9 years out of 10. 03/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Leon Valley compares
Leon Valley's growing season runs about 284 days, ranking 4,680 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 723 of 2,558.
Learn more
the frost range explains how to read the range around Leon Valley's dates instead of trusting one, and local microclimates explains what one yard in Leon Valley can differ from the 78236 normal.