Fredericksburg, TX 78624 Frost Dates
78624, near Fredericksburg, TX: the frost window
Around 03/20 is the usual last spring frost, about 204 days away. Fall's first freeze usually shows up around 11/10, roughly 235 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Fredericksburg 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
Fredericksburg's growing season runs out in roughly 11 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
03/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/11 and only about 1 year in 10 sees frost after that.
Fredericksburg against the rest of the dataset
At roughly 235 frost-free days, Fredericksburg places 9,574 of 40,283 ZIP codes in this dataset. Within TX, it ranks 2,019 of 2,558.
Learn more
Two guides worth reading on 78624: zone vs. frost date, on why Zone 8b and Fredericksburg's frost date answer different questions, and the frost range, on how to read the range around Fredericksburg's dates instead of trusting one.