San Patricio, TX 78352 Frost Dates
78352, near San Patricio, TX: the frost window
Around 02/01 is the usual last spring frost, about 157 days away. Fall's first freeze usually shows up around 12/17, roughly 324 days after the last spring frost.
San Patricio sits in USDA Zone 9b (25 to 30°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.
Stretching the season past the first frost
San Patricio's growing season runs out in roughly 16 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
02/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/27 and only about 1 year in 10 sees frost after that.
San Patricio against the rest of the dataset
About 324 days separate San Patricio's last and first frost, putting it 3,234 of 40,283 ZIP codes nationally. Within TX, it ranks 199 of 2,558.
Learn more
Two guides worth reading on 78352: zone vs. frost date, on why Zone 9b and San Patricio's frost date answer different questions, and the frost range, on how to read the range around San Patricio's dates instead of trusting one.