Katy, TX 77450 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 9b (25 to 30°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.
The actual range around Katy's last frost
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
Katy's growing season runs about 318 days, ranking 3,331 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 232 of 2,558.
Learn more
local microclimates covers what one yard in Katy can differ from the 77450 normal. zone vs. frost date covers why Zone 9b and Katy's frost date answer different questions.