Winnsboro, TX 75480 Frost Dates
75480, near Winnsboro, TX: the frost window
Typically, the last spring freeze lands around 03/26, roughly 210 days out. Fall's first freeze usually shows up around 11/08, roughly 229 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Winnsboro 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
Winnsboro's growing season runs out in roughly 10 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
03/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/16 and only about 1 year in 10 sees frost after that.
Winnsboro against the rest of the dataset
Winnsboro's growing season runs about 229 days, ranking 10,587 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 2,167 of 2,558.
Learn more
Two guides worth reading on 75480: local microclimates, on what one yard in Winnsboro can differ from the 75480 normal, and zone vs. frost date, on why Zone 8b and Winnsboro's frost date answer different questions.