Roby, TX 79543 Frost Dates
Frost dates for Roby, TX, ZIP 79543
The last spring frost here typically falls around 03/17, about 201 days from today. The first fall frost typically arrives around 11/15, about 243 frost-free days later.
Roby sits in USDA Zone 8a (10 to 15°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 8a around Roby has about 11 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.
Why 03/17 isn't a guarantee
03/17 is the middle of 30 years of NOAA records, not a promise. Plant by 02/28 and you're betting against frost in roughly 9 years out of 10. 04/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Roby compares
At roughly 243 frost-free days, Roby places 8,326 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,860 of 2,558.
Learn more
the frost range explains how to read the range around Roby's dates instead of trusting one, and local microclimates explains what one yard in Roby can differ from the 79543 normal.