Mertzon, TX 76941 Frost Dates
Frost dates for Mertzon, TX, ZIP 76941
The last spring frost here typically falls around 04/01, about 216 days from today. The first fall frost typically arrives around 11/04, about 215 frost-free days later.
The USDA Plant Hardiness Zone Map puts Mertzon in Zone 8a (10 to 15°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 8a around Mertzon has about 10 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 Mertzon's last frost
04/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mertzon compares
At roughly 215 frost-free days, Mertzon places 14,158 of 40,283 ZIP codes in this dataset. Within TX, it ranks 2,349 of 2,558.
Learn more
the frost range explains how to read the range around Mertzon's dates instead of trusting one, and local microclimates explains what one yard in Mertzon can differ from the 76941 normal.