Robstown, TX 78409 Frost Dates
When can you plant in Robstown, TX?
Around 01/28 is the usual last spring frost, about 153 days away. The first fall frost typically arrives around 12/21, about 331 frost-free days later.
The USDA Plant Hardiness Zone Map puts Robstown in Zone 9b (25 to 30°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
About 16 weeks of growing season left in Robstown before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Robstown's last frost
01/28 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. 12/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Robstown compares
At roughly 331 frost-free days, Robstown places 2,946 of 40,283 ZIP codes in this dataset. Within TX, it ranks 132 of 2,558.
Learn more
the frost range covers how to read the range around Robstown's dates instead of trusting one. local microclimates covers what one yard in Robstown can differ from the 78409 normal.