Katy, TX 77493 Frost Dates
77493, near Katy, TX: the frost window
Around 02/02 is the usual last spring frost, about 158 days away. Fall's first freeze usually shows up around 12/11, roughly 318 days after the last spring frost.
Katy sits in USDA Zone 9a (20 to 25°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Katy's growing season runs out in roughly 15 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 02/02 isn't a guarantee
02/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/28 and only about 1 year in 10 sees frost after that.
Katy against the rest of the dataset
Katy's growing season runs about 318 days, ranking 3,332 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 233 of 2,558.
Learn more
Two guides worth reading on 77493: the frost range, on how to read the range around Katy's dates instead of trusting one, and local microclimates, on what one yard in Katy can differ from the 77493 normal.