Roby, TX 79560 Frost Dates
79560, near Roby, TX: the frost window
Around 03/31 is the usual last spring frost, about 215 days away. Fall's first freeze usually shows up around 11/06, roughly 221 days after the last spring frost.
Zone 8a (10 to 15°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 Roby, not a forecast for this year.
Stretching the season past the first frost
Roby's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Roby's last frost
03/31 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/15 and only about 1 year in 10 sees frost after that.
Roby against the rest of the dataset
Roby's growing season runs about 221 days, ranking 12,562 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 2,297 of 2,558.
Learn more
Two guides worth reading on 79560: zone vs. frost date, on why Zone 8a and Roby's frost date answer different questions, and the frost range, on how to read the range around Roby's dates instead of trusting one.