Texarkana, TX 75503 Frost Dates
75503, near Texarkana, TX: the frost window
Typically, the last spring freeze lands around 03/15, roughly 199 days out. Fall's first freeze usually shows up around 11/17, roughly 249 days after the last spring frost.
Texarkana sits in USDA Zone 8b (15 to 20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Texarkana's growing season runs out in roughly 12 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/15 isn't a guarantee
03/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/04 and only about 1 year in 10 sees frost after that.
Texarkana against the rest of the dataset
At roughly 249 frost-free days, Texarkana places 7,606 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,708 of 2,558.
Learn more
Two guides worth reading on 75503: the frost range, on how to read the range around Texarkana's dates instead of trusting one, and local microclimates, on what one yard in Texarkana can differ from the 75503 normal.