Karnes City, TX 78144 Frost Dates
When can you plant in Karnes City, TX?
Around 02/16 is the usual last spring frost, about 172 days away. The first fall frost typically arrives around 12/09, about 300 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 Karnes City, not a forecast for this year.
What to do before the first frost
About 15 weeks of growing season left in Karnes City before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Karnes City's last frost
02/16 is the middle of 30 years of NOAA records, not a promise. Plant by 01/13 and you're betting against frost in roughly 9 years out of 10. 03/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Karnes City compares
About 300 days separate Karnes City's last and first frost, putting it 4,120 of 40,283 ZIP codes nationally. Within TX, it ranks 450 of 2,558.
Learn more
local microclimates covers what one yard in Karnes City can differ from the 78144 normal. zone vs. frost date covers why Zone 9a and Karnes City's frost date answer different questions.