Laguna Vista, TX 78578 Frost Dates
78578, near Laguna Vista, TX: the frost window
The last spring frost here typically falls around 01/03, about 128 days from today. Fall's first freeze usually shows up around 01/01, roughly 365 days after the last spring frost.
Zone 10a (30 to 35°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 Laguna Vista, not a forecast for this year.
Stretching the season past the first frost
Laguna Vista's growing season runs out in roughly 18 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 01/03 isn't a guarantee
01/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/11 and only about 1 year in 10 sees frost after that.
Laguna Vista against the rest of the dataset
Laguna Vista's growing season runs about 365 days, ranking 1,908 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 39 of 2,558.
Learn more
Two guides worth reading on 78578: zone vs. frost date, on why Zone 10a and Laguna Vista's frost date answer different questions, and the frost range, on how to read the range around Laguna Vista's dates instead of trusting one.