Huntsville, TX 77342 Frost Dates
77342, near Huntsville, 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 11/26, roughly 272 days after the last spring frost.
Zone 9a (20 to 25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Huntsville, not a forecast for this year.
Stretching the season past the first frost
Huntsville'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 01/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/24 and only about 1 year in 10 sees frost after that.
Huntsville against the rest of the dataset
At roughly 272 frost-free days, Huntsville places 5,323 of 40,283 ZIP codes in this dataset. Within TX, it ranks 976 of 2,558.
Learn more
Two guides worth reading on 77342: the frost range, on how to read the range around Huntsville's dates instead of trusting one, and local microclimates, on what one yard in Huntsville can differ from the 77342 normal.