San Felipe, TX 77473 Frost Dates
Frost dates for San Felipe, TX, ZIP 77473
Typically, the last spring freeze lands around 02/21, roughly 177 days out. The first fall frost typically arrives around 12/01, about 285 frost-free days later.
The USDA Plant Hardiness Zone Map puts San Felipe 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 San Felipe 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
02/21 is the middle of 30 years of NOAA records, not a promise. Plant by 01/22 and you're betting against frost in roughly 9 years out of 10. 03/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How San Felipe compares
About 285 days separate San Felipe's last and first frost, putting it 4,653 of 40,283 ZIP codes nationally. Within TX, it ranks 715 of 2,558.
Learn more
zone vs. frost date explains why Zone 9a and San Felipe's frost date answer different questions, and the frost range explains how to read the range around San Felipe's dates instead of trusting one.