Houston, TX 77258 Frost Dates
Houston, TX: when does the frost end?
Typically, the last spring freeze lands around 02/13, roughly 169 days out. Fall's first freeze usually shows up around 12/09, roughly 300 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Houston in Zone 9b (25 to 30°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
With roughly 15 weeks until Houston's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
02/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/12 and only about 1 year in 10 sees frost after that.
Houston against the rest of the dataset
Houston's growing season runs about 300 days, ranking 4,041 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 373 of 2,558.
Learn more
Before leaning on 77258's figures: the frost range explains how to read the range around Houston's dates instead of trusting one, while local microclimates explains what one yard in Houston can differ from the 77258 normal.