Blanco, TX 78027 Frost Dates
78027, near Blanco, TX: the frost window
Typically, the last spring freeze lands around 03/01, roughly 185 days out. Fall's first freeze usually shows up around 12/01, roughly 276 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Blanco in Zone 8b (15 to 20°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
Blanco's growing season runs out in roughly 14 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
03/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/22 and only about 1 year in 10 sees frost after that.
Blanco against the rest of the dataset
At roughly 276 frost-free days, Blanco places 5,110 of 40,283 ZIP codes in this dataset. Within TX, it ranks 839 of 2,558.
Learn more
Two guides worth reading on 78027: zone vs. frost date, on why Zone 8b and Blanco's frost date answer different questions, and the frost range, on how to read the range around Blanco's dates instead of trusting one.