Plano, TX 75093 Frost Dates
Frost dates for Plano, TX, ZIP 75093
Typically, the last spring freeze lands around 03/07, roughly 191 days out. The first fall frost typically arrives around 11/21, about 259 frost-free days later.
Zone 8b (15 to 20°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 Plano, not a forecast for this year.
What to do before the first frost
Zone 8b around Plano has about 12 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 03/07 isn't a guarantee
03/07 is the middle of 30 years of NOAA records, not a promise. Plant by 02/18 and you're betting against frost in roughly 9 years out of 10. 03/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Plano compares
About 259 days separate Plano's last and first frost, putting it 6,517 of 40,283 ZIP codes nationally. Within TX, it ranks 1,348 of 2,558.
Learn more
zone vs. frost date explains why Zone 8b and Plano's frost date answer different questions, and the frost range explains how to read the range around Plano's dates instead of trusting one.