Sweeny, TX 77480 Frost Dates
Sweeny, TX: when does the frost end?
Around 02/13 is the usual last spring frost, about 169 days away. Fall's first freeze usually shows up around 12/08, roughly 301 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Sweeny in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 15 weeks until Sweeny's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Sweeny's last frost
02/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/17 and only about 1 year in 10 sees frost after that.
Sweeny against the rest of the dataset
About 301 days separate Sweeny's last and first frost, putting it 3,975 of 40,283 ZIP codes nationally. Within TX, it ranks 310 of 2,558.
Learn more
Before leaning on 77480's figures: zone vs. frost date explains why Zone 9b and Sweeny's frost date answer different questions, while the frost range explains how to read the range around Sweeny's dates instead of trusting one.