Austin, TX 78705 Frost Dates
Austin, TX: when does the frost end?
The last spring frost here typically falls around 02/20, about 176 days from today. Fall's first freeze usually shows up around 12/03, roughly 291 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Austin in Zone 9a (20 to 25°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 14 weeks until Austin's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 02/20 isn't a guarantee
02/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/14 and only about 1 year in 10 sees frost after that.
Austin against the rest of the dataset
At roughly 291 frost-free days, Austin places 4,397 of 40,283 ZIP codes in this dataset. Within TX, it ranks 559 of 2,558.
Learn more
Before leaning on 78705's figures: the frost range explains how to read the range around Austin's dates instead of trusting one, while local microclimates explains what one yard in Austin can differ from the 78705 normal.