Brenham, TX 77426 Frost Dates
77426, near Brenham, TX: the frost window
Around 03/02 is the usual last spring frost, about 186 days away. Fall's first freeze usually shows up around 11/30, roughly 273 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Brenham in Zone 9a (20 to 25°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
Brenham'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.
The actual range around Brenham's last frost
03/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/20 and only about 1 year in 10 sees frost after that.
Brenham against the rest of the dataset
At roughly 273 frost-free days, Brenham places 5,194 of 40,283 ZIP codes in this dataset. Within TX, it ranks 865 of 2,558.
Learn more
Two guides worth reading on 77426: local microclimates, on what one yard in Brenham can differ from the 77426 normal, and zone vs. frost date, on why Zone 9a and Brenham's frost date answer different questions.