Silverton, TX 79257 Frost Dates
Frost dates for Silverton, TX, ZIP 79257
Typically, the last spring freeze lands around 04/13, roughly 228 days out. The first fall frost typically arrives around 10/28, about 197 frost-free days later.
Zone 7b (5 to 10°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 Silverton, not a forecast for this year.
What to do before the first frost
Zone 7b around Silverton has about 9 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 04/13 isn't a guarantee
04/13 is the middle of 30 years of NOAA records, not a promise. Plant by 03/28 and you're betting against frost in roughly 9 years out of 10. 04/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Silverton compares
About 197 days separate Silverton's last and first frost, putting it 18,756 of 40,283 ZIP codes nationally. Within TX, it ranks 2,456 of 2,558.
Learn more
zone vs. frost date explains why Zone 7b and Silverton's frost date answer different questions, and the frost range explains how to read the range around Silverton's dates instead of trusting one.