Pharr, TX 78503 Frost Dates
Frost dates for Pharr, TX, ZIP 78503
Typically, the last spring freeze lands around 01/09, roughly 134 days out. The first fall frost typically arrives around 01/03, about 365 frost-free days later.
The USDA Plant Hardiness Zone Map puts Pharr in Zone 10a (30 to 35°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 10a around Pharr 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 Pharr's last frost
01/09 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. 12/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pharr compares
Pharr's growing season runs about 365 days, ranking 679 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 18 of 2,558.
Learn more
the frost range explains how to read the range around Pharr's dates instead of trusting one, and local microclimates explains what one yard in Pharr can differ from the 78503 normal.