Mount Vernon, AR 72045 Frost Dates
72045, near Mount Vernon, AR: the frost window
Typically, the last spring freeze lands around 04/04, roughly 219 days out. Fall's first freeze usually shows up around 10/31, roughly 209 days after the last spring frost.
Mount Vernon sits in USDA Zone 8a (10 to 15°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
Mount Vernon's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/20 and only about 1 year in 10 sees frost after that.
Mount Vernon against the rest of the dataset
At roughly 209 frost-free days, Mount Vernon places 15,440 of 40,283 ZIP codes in this dataset. Within AR, it ranks 552 of 687.
Learn more
Two guides worth reading on 72045: zone vs. frost date, on why Zone 8a and Mount Vernon's frost date answer different questions, and the frost range, on how to read the range around Mount Vernon's dates instead of trusting one.