Kirby, TX 78220 Frost Dates
When can you plant in Kirby, TX?
The last spring frost here typically falls around 02/25, about 181 days from today. The first fall frost typically arrives around 11/28, about 277 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
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 4,975 of 40,283 ZIP codes nationally. Within TX, it ranks 778 of 2,558.
Learn more
local microclimates covers what one yard in Kirby can differ from the 78220 normal. zone vs. frost date covers why Zone 9a and Kirby's frost date answer different questions.