Dallas, TX 75226 Frost Dates
75226, near Dallas, TX: the frost window
Typically, the last spring freeze lands around 03/02, roughly 186 days out. Fall's first freeze usually shows up around 11/29, roughly 272 days after the last spring frost.
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.
Stretching the season past the first frost
Dallas's growing season runs out in roughly 13 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/02 isn't a guarantee
03/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/19 and only about 1 year in 10 sees frost after that.
Dallas against the rest of the dataset
About 272 days separate Dallas's last and first frost, putting it 5,251 of 40,283 ZIP codes nationally. Within TX, it ranks 912 of 2,558.
Learn more
Two guides worth reading on 75226: local microclimates, on what one yard in Dallas can differ from the 75226 normal, and zone vs. frost date, on why Zone 8b and Dallas's frost date answer different questions.