Addison, TX 75254 Frost Dates
75254, near Addison, TX: the frost window
Around 03/07 is the usual last spring frost, about 191 days away. Fall's first freeze usually shows up around 11/21, roughly 259 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Addison 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
Addison's growing season runs out in roughly 12 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
03/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/29 and only about 1 year in 10 sees frost after that.
Addison against the rest of the dataset
Addison's growing season runs about 259 days, ranking 6,565 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 1,381 of 2,558.
Learn more
Two guides worth reading on 75254: local microclimates, on what one yard in Addison can differ from the 75254 normal, and zone vs. frost date, on why Zone 8b and Addison's frost date answer different questions.