Jacinto City, TX 77029 Frost Dates
77029, near Jacinto City, TX: the frost window
The last spring frost here typically falls around 01/30, about 155 days from today. Fall's first freeze usually shows up around 12/28, roughly 330 days after the last spring frost.
Zone 9b (25 to 30°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 Jacinto City, not a forecast for this year.
Stretching the season past the first frost
Jacinto City's growing season runs out in roughly 17 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 01/30 isn't a guarantee
01/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/29 and only about 1 year in 10 sees frost after that.
Jacinto City against the rest of the dataset
About 330 days separate Jacinto City's last and first frost, putting it 3,037 of 40,283 ZIP codes nationally. Within TX, it ranks 175 of 2,558.
Learn more
Two guides worth reading on 77029: local microclimates, on what one yard in Jacinto City can differ from the 77029 normal, and zone vs. frost date, on why Zone 9b and Jacinto City's frost date answer different questions.