Katy, TX 77494 Frost Dates
When can you plant in Katy, TX?
Typically, the last spring freeze lands around 02/02, roughly 158 days out. The first fall frost typically arrives around 12/11, about 318 frost-free days later.
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 Katy, not a forecast for this year.
What to do before the first frost
About 15 weeks of growing season left in Katy before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 02/02 isn't a guarantee
02/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/07 and you're betting against frost in roughly 9 years out of 10. 12/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Katy compares
About 318 days separate Katy's last and first frost, putting it 3,333 of 40,283 ZIP codes nationally. Within TX, it ranks 234 of 2,558.
Learn more
zone vs. frost date covers why Zone 9a and Katy's frost date answer different questions. the frost range covers how to read the range around Katy's dates instead of trusting one.