Alpine, TX 79831 Frost Dates
Alpine, TX: when does the frost end?
Around 04/02 is the usual last spring frost, about 217 days away. Fall's first freeze usually shows up around 11/03, roughly 216 days after the last spring frost.
Zone 8a (10 to 15°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 Alpine, not a forecast for this year.
Stretching the season past the first frost
With roughly 10 weeks until Alpine's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/20 and only about 1 year in 10 sees frost after that.
Alpine against the rest of the dataset
At roughly 216 frost-free days, Alpine places 13,767 of 40,283 ZIP codes in this dataset. Within TX, it ranks 2,334 of 2,558.
Learn more
Before leaning on 79831's figures: local microclimates explains what one yard in Alpine can differ from the 79831 normal, while zone vs. frost date explains why Zone 8a and Alpine's frost date answer different questions.