Port Lavaca, TX 77977 Frost Dates
Port Lavaca, TX: when does the frost end?
The last spring frost here typically falls around 02/04, about 160 days from today. Fall's first freeze usually shows up around 12/09, roughly 309 days after the last spring frost.
Port Lavaca sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 15 weeks until Port Lavaca's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Port Lavaca's last frost
02/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/30 and only about 1 year in 10 sees frost after that.
Port Lavaca against the rest of the dataset
At roughly 309 frost-free days, Port Lavaca places 3,647 of 40,283 ZIP codes in this dataset. Within TX, it ranks 283 of 2,558.
Learn more
Before leaning on 77977's figures: zone vs. frost date explains why Zone 9b and Port Lavaca's frost date answer different questions, while the frost range explains how to read the range around Port Lavaca's dates instead of trusting one.