Montrose, AR 71658 Frost Dates
71658, near Montrose, AR: the frost window
Around 03/14 is the usual last spring frost, about 198 days away. Fall's first freeze usually shows up around 11/10, roughly 241 days after the last spring frost.
Montrose 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
Montrose's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/14 isn't a guarantee
03/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/01 and only about 1 year in 10 sees frost after that.
Montrose against the rest of the dataset
Montrose's growing season runs about 241 days, ranking 8,634 of 40,283 US ZIP codes measured here, longest to shortest. Within AR, it ranks 83 of 687.
Learn more
Two guides worth reading on 71658: zone vs. frost date, on why Zone 8b and Montrose's frost date answer different questions, and the frost range, on how to read the range around Montrose's dates instead of trusting one.