Kirby, TX 78244 Frost Dates
Frost dates for Kirby, TX, ZIP 78244
Typically, the last spring freeze lands around 02/21, roughly 177 days out. The first fall frost typically arrives around 12/05, about 289 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 Kirby, not a forecast for this year.
What to do before the first frost
Zone 9a around Kirby has about 14 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.
The actual range around Kirby's last frost
02/21 is the middle of 30 years of NOAA records, not a promise. Plant by 01/10 and you're betting against frost in roughly 9 years out of 10. 03/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kirby compares
About 289 days separate Kirby's last and first frost, putting it 4,546 of 40,283 ZIP codes nationally. Within TX, it ranks 673 of 2,558.
Learn more
local microclimates explains what one yard in Kirby can differ from the 78244 normal, and zone vs. frost date explains why Zone 9a and Kirby's frost date answer different questions.