League City, TX 77573 Frost Dates
Frost dates for League City, TX, ZIP 77573
Around 01/31 is the usual last spring frost, about 156 days away. The first fall frost typically arrives around 12/14, about 317 frost-free days later.
League City sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 9b around League City 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.
The actual range around League City's last frost
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 League City compares
League City's growing season runs about 317 days, ranking 3,366 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 257 of 2,558.
Learn more
the frost range explains how to read the range around League City's dates instead of trusting one, and local microclimates explains what one yard in League City can differ from the 77573 normal.