Columbus, TX 78943 Frost Dates
Columbus, TX: when does the frost end?
Around 03/09 is the usual last spring frost, about 193 days away. Fall's first freeze usually shows up around 11/20, roughly 255 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Columbus 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 12 weeks until Columbus's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/09 isn't a guarantee
03/09 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 03/31 and only about 1 year in 10 sees frost after that.
Columbus against the rest of the dataset
Columbus's growing season runs about 255 days, ranking 6,931 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 1,504 of 2,558.
Learn more
Before leaning on 78943's figures: the frost range explains how to read the range around Columbus's dates instead of trusting one, while local microclimates explains what one yard in Columbus can differ from the 78943 normal.