Mathis, TX 78368 Frost Dates
Frost dates for Mathis, TX, ZIP 78368
Typically, the last spring freeze lands around 02/01, roughly 157 days out. The first fall frost typically arrives around 12/17, about 324 frost-free days later.
Zone 9b (25 to 30°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Mathis, not a forecast for this year.
What to do before the first frost
Zone 9b around Mathis has about 16 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 Mathis's last frost
02/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/06 and you're betting against frost in roughly 9 years out of 10. 12/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mathis compares
About 324 days separate Mathis's last and first frost, putting it 3,229 of 40,283 ZIP codes nationally. Within TX, it ranks 196 of 2,558.
Learn more
local microclimates explains what one yard in Mathis can differ from the 78368 normal, and zone vs. frost date explains why Zone 9b and Mathis's frost date answer different questions.