Amarillo, TX 79103 Frost Dates
Amarillo, TX: when does the frost end?
Typically, the last spring freeze lands around 04/13, roughly 228 days out. Fall's first freeze usually shows up around 10/27, roughly 195 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Amarillo in Zone 7a (0 to 5°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 9 weeks until Amarillo's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Amarillo's last frost
04/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/29 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/29 and only about 1 year in 10 sees frost after that.
Amarillo against the rest of the dataset
Amarillo's growing season runs about 195 days, ranking 19,131 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 2,466 of 2,558.
Learn more
Before leaning on 79103's figures: the frost range explains how to read the range around Amarillo's dates instead of trusting one, while local microclimates explains what one yard in Amarillo can differ from the 79103 normal.