Hamilton, TX 76531 Frost Dates
Frost dates for Hamilton, TX, ZIP 76531
Around 03/15 is the usual last spring frost, about 199 days away. The first fall frost typically arrives around 11/18, about 247 frost-free days later.
The USDA Plant Hardiness Zone Map puts Hamilton in Zone 8b (15 to 20°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 8b around Hamilton has about 12 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
03/15 is the middle of 30 years of NOAA records, not a promise. Plant by 02/25 and you're betting against frost in roughly 9 years out of 10. 04/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hamilton compares
At roughly 247 frost-free days, Hamilton places 7,833 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,769 of 2,558.
Learn more
zone vs. frost date explains why Zone 8b and Hamilton's frost date answer different questions, and the frost range explains how to read the range around Hamilton's dates instead of trusting one.