McAllen, TX 78502 Frost Dates
Frost dates for McAllen, TX, ZIP 78502
The last spring frost here typically falls around 01/08, about 133 days from today. The first fall frost typically arrives around 01/02, about 365 frost-free days later.
McAllen sits in USDA Zone 10a (30 to 35°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 10a around McAllen has about 18 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 McAllen's last frost
01/08 is the middle of 30 years of NOAA records, not a promise. Plant by 02/21 and you're betting against frost in roughly 9 years out of 10. 12/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How McAllen compares
About 365 days separate McAllen's last and first frost, putting it 399 of 40,283 ZIP codes nationally. Within TX, it ranks 8 of 2,558.
Learn more
the frost range explains how to read the range around McAllen's dates instead of trusting one, and local microclimates explains what one yard in McAllen can differ from the 78502 normal.