Kirby, TX 78219 Frost Dates
When can you plant in Kirby, TX?
Around 02/25 is the usual last spring frost, about 181 days away. The first fall frost typically arrives around 11/28, about 277 frost-free days later.
The USDA Plant Hardiness Zone Map puts Kirby in Zone 9a (20 to 25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 13 weeks of growing season left in Kirby before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Kirby's last frost
02/25 is the middle of 30 years of NOAA records, not a promise. Plant by 01/28 and you're betting against frost in roughly 9 years out of 10. 03/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kirby compares
About 277 days separate Kirby's last and first frost, putting it 4,974 of 40,283 ZIP codes nationally. Within TX, it ranks 777 of 2,558.
Learn more
zone vs. frost date covers why Zone 9a and Kirby's frost date answer different questions. the frost range covers how to read the range around Kirby's dates instead of trusting one.