South Padre Island, TX 78597 Frost Dates
Frost dates for South Padre Island, TX, ZIP 78597
Around 01/03 is the usual last spring frost, about 128 days away. The first fall frost typically arrives around 01/01, about 365 frost-free days later.
Zone 10b (35 to 40°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for South Padre Island, not a forecast for this year.
What to do before the first frost
Zone 10b around South Padre Island has about 18 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.
The actual range around South Padre Island's last frost
01/03 is the middle of 30 years of NOAA records, not a promise. Plant by 02/02 and you're betting against frost in roughly 9 years out of 10. 12/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How South Padre Island compares
At roughly 365 frost-free days, South Padre Island places 1,950 of 40,283 ZIP codes in this dataset. Within TX, it ranks 43 of 2,558.
Learn more
zone vs. frost date explains why Zone 10b and South Padre Island's frost date answer different questions, and the frost range explains how to read the range around South Padre Island's dates instead of trusting one.