Seguin, TX 78115 Frost Dates
Seguin, TX: when does the frost end?
The last spring frost here typically falls around 03/01, about 185 days from today. Fall's first freeze usually shows up around 11/26, roughly 273 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Seguin 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 13 weeks until Seguin's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/01 isn't a guarantee
03/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/20 and only about 1 year in 10 sees frost after that.
Seguin against the rest of the dataset
Seguin's growing season runs about 273 days, ranking 5,183 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 861 of 2,558.
Learn more
Before leaning on 78115's figures: local microclimates explains what one yard in Seguin can differ from the 78115 normal, while zone vs. frost date explains why Zone 9a and Seguin's frost date answer different questions.