Boerne, TX 78074 Frost Dates
Boerne, TX: when does the frost end?
Typically, the last spring freeze lands around 02/26, roughly 182 days out. Fall's first freeze usually shows up around 11/28, roughly 277 days after the last spring frost.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Boerne, not a forecast for this year.
Stretching the season past the first frost
With roughly 13 weeks until Boerne's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 02/26 isn't a guarantee
02/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/29 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.
Boerne against the rest of the dataset
Boerne's growing season runs about 277 days, ranking 4,968 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 774 of 2,558.
Learn more
Before leaning on 78074's figures: the frost range explains how to read the range around Boerne's dates instead of trusting one, while local microclimates explains what one yard in Boerne can differ from the 78074 normal.