Weir, TX 78683 Frost Dates
78683, near Weir, TX: the frost window
The last spring frost here typically falls around 03/06, about 190 days from today. Fall's first freeze usually shows up around 11/24, roughly 259 days after the last spring frost.
Zone 9a (20 to 25°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 Weir, not a forecast for this year.
Stretching the season past the first frost
Weir's growing season runs out in roughly 13 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
03/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/30 and only about 1 year in 10 sees frost after that.
Weir against the rest of the dataset
Weir's growing season runs about 259 days, ranking 6,604 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 1,399 of 2,558.
Learn more
Two guides worth reading on 78683: zone vs. frost date, on why Zone 9a and Weir's frost date answer different questions, and the frost range, on how to read the range around Weir's dates instead of trusting one.