La Marque, TX 77591 Frost Dates
Frost dates for La Marque, TX, ZIP 77591
The last spring frost here typically falls around 01/31, about 156 days from today. The first fall frost typically arrives around 12/14, about 317 frost-free days later.
Zone 9b (25 to 30°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 La Marque, not a forecast for this year.
What to do before the first frost
Zone 9b around La Marque has about 15 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 01/31 isn't a guarantee
01/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/05 and you're betting against frost in roughly 9 years out of 10. 12/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How La Marque compares
La Marque's growing season runs about 317 days, ranking 3,371 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 260 of 2,558.
Learn more
local microclimates explains what one yard in La Marque can differ from the 77591 normal, and zone vs. frost date explains why Zone 9b and La Marque's frost date answer different questions.