Laredo, TX 78040 Frost Dates
Frost dates for Laredo, TX, ZIP 78040
Around 01/20 is the usual last spring frost, about 145 days away. The first fall frost typically arrives around 12/25, about 344 frost-free days later.
The USDA Plant Hardiness Zone Map puts Laredo in Zone 9b (25 to 30°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
Zone 9b around Laredo has about 17 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.
Why 01/20 isn't a guarantee
01/20 is the middle of 30 years of NOAA records, not a promise. Plant by 02/26 and you're betting against frost in roughly 9 years out of 10. 12/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Laredo compares
About 344 days separate Laredo's last and first frost, putting it 2,453 of 40,283 ZIP codes nationally. Within TX, it ranks 87 of 2,558.
Learn more
local microclimates explains what one yard in Laredo can differ from the 78040 normal, and zone vs. frost date explains why Zone 9b and Laredo's frost date answer different questions.