Mount Vernon, AL 36579 Frost Dates
Mount Vernon, AL: when does the frost end?
Typically, the last spring freeze lands around 02/28, roughly 184 days out. Fall's first freeze usually shows up around 11/25, roughly 272 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Mount Vernon in Zone 8b (15 to 20°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 13 weeks until Mount Vernon's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
02/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/21 and only about 1 year in 10 sees frost after that.
Mount Vernon against the rest of the dataset
About 272 days separate Mount Vernon's last and first frost, putting it 5,395 of 40,283 ZIP codes nationally. Within AL, it ranks 34 of 809.
Learn more
Before leaning on 36579's figures: local microclimates explains what one yard in Mount Vernon can differ from the 36579 normal, while zone vs. frost date explains why Zone 8b and Mount Vernon's frost date answer different questions.