Three Rivers, TX 78075 Frost Dates
Three Rivers, TX: when does the frost end?
Typically, the last spring freeze lands around 02/13, roughly 169 days out. Fall's first freeze usually shows up around 12/03, roughly 299 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Three Rivers 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 14 weeks until Three Rivers's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 02/13 isn't a guarantee
02/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/11 and only about 1 year in 10 sees frost after that.
Three Rivers against the rest of the dataset
At roughly 299 frost-free days, Three Rivers places 4,177 of 40,283 ZIP codes in this dataset. Within TX, it ranks 484 of 2,558.
Learn more
Before leaning on 78075's figures: the frost range explains how to read the range around Three Rivers's dates instead of trusting one, while local microclimates explains what one yard in Three Rivers can differ from the 78075 normal.