Harrison, AR 72601 Frost Dates
72601, near Harrison, AR: the frost window
Around 03/22 is the usual last spring frost, about 206 days away. Fall's first freeze usually shows up around 11/09, roughly 231 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Harrison in Zone 7b (5 to 10°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
Harrison'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.
Why 03/22 isn't a guarantee
03/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/08 and only about 1 year in 10 sees frost after that.
Harrison against the rest of the dataset
At roughly 231 frost-free days, Harrison places 10,157 of 40,283 ZIP codes in this dataset. Within AR, it ranks 211 of 687.
Learn more
Two guides worth reading on 72601: the frost range, on how to read the range around Harrison's dates instead of trusting one, and local microclimates, on what one yard in Harrison can differ from the 72601 normal.