Dallas, TX 75397 Frost Dates
Frost dates for Dallas, TX, ZIP 75397
Around 03/02 is the usual last spring frost, about 186 days away. The first fall frost typically arrives around 11/29, about 272 frost-free days later.
The USDA Plant Hardiness Zone Map puts Dallas in Zone 8b (15 to 20°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 8b around Dallas has about 13 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 03/02 isn't a guarantee
03/02 is the middle of 30 years of NOAA records, not a promise. Plant by 02/10 and you're betting against frost in roughly 9 years out of 10. 03/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dallas compares
Dallas's growing season runs about 272 days, ranking 5,306 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 967 of 2,558.
Learn more
the frost range explains how to read the range around Dallas's dates instead of trusting one, and local microclimates explains what one yard in Dallas can differ from the 75397 normal.