Mobile, AL 36609 Frost Dates
Mobile, AL: when does the frost end?
Typically, the last spring freeze lands around 03/03, roughly 187 days out. Fall's first freeze usually shows up around 11/25, roughly 268 days after the last spring frost.
Zone 9a (20 to 25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Mobile, not a forecast for this year.
Stretching the season past the first frost
With roughly 13 weeks until Mobile'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
03/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/06 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.
Mobile against the rest of the dataset
About 268 days separate Mobile's last and first frost, putting it 5,711 of 40,283 ZIP codes nationally. Within AL, it ranks 58 of 809.
Learn more
Before leaning on 36609's figures: the frost range explains how to read the range around Mobile's dates instead of trusting one, while local microclimates explains what one yard in Mobile can differ from the 36609 normal.