Bay City, TX 77468 Frost Dates
Frost dates for Bay City, TX, ZIP 77468
The last spring frost here typically falls around 02/20, about 176 days from today. The first fall frost typically arrives around 12/03, about 290 frost-free days later.
The USDA Plant Hardiness Zone Map puts Bay City 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 Bay City has about 14 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.
How much risk comes with planting early here
02/20 is the middle of 30 years of NOAA records, not a promise. Plant by 01/19 and you're betting against frost in roughly 9 years out of 10. 03/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bay City compares
About 290 days separate Bay City's last and first frost, putting it 4,493 of 40,283 ZIP codes nationally. Within TX, it ranks 634 of 2,558.
Learn more
local microclimates explains what one yard in Bay City can differ from the 77468 normal, and zone vs. frost date explains why Zone 9b and Bay City's frost date answer different questions.