Katy, TX 77449 Frost Dates
Frost dates for Katy, TX, ZIP 77449
The last spring frost here typically falls around 02/02, about 158 days from today. 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
Zone 9b around Katy has about 15 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
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 3,330 of 40,283 ZIP codes nationally. Within TX, it ranks 231 of 2,558.
Learn more
the frost range explains how to read the range around Katy's dates instead of trusting one, and local microclimates explains what one yard in Katy can differ from the 77449 normal.