Sunset Valley, TX 78749 Frost Dates
78749, near Sunset Valley, TX: the frost window
Around 02/20 is the usual last spring frost, about 176 days away. Fall's first freeze usually shows up around 12/03, roughly 291 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Sunset Valley 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
Sunset Valley's growing season runs out in roughly 14 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
02/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/14 and only about 1 year in 10 sees frost after that.
Sunset Valley against the rest of the dataset
Sunset Valley's growing season runs about 291 days, ranking 4,476 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 622 of 2,558.
Learn more
Two guides worth reading on 78749: the frost range, on how to read the range around Sunset Valley's dates instead of trusting one, and local microclimates, on what one yard in Sunset Valley can differ from the 78749 normal.