Marietta, TX 75566 Frost Dates
Frost dates for Marietta, TX, ZIP 75566
The last spring frost here typically falls around 03/04, about 188 days from today. The first fall frost typically arrives around 11/21, about 261 frost-free days later.
Marietta sits in USDA Zone 8b (15 to 20°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 8b around Marietta 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
03/04 is the middle of 30 years of NOAA records, not a promise. Plant by 02/13 and you're betting against frost in roughly 9 years out of 10. 03/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Marietta compares
At roughly 261 frost-free days, Marietta places 6,458 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,321 of 2,558.
Learn more
zone vs. frost date explains why Zone 8b and Marietta's frost date answer different questions, and the frost range explains how to read the range around Marietta's dates instead of trusting one.