Pennington, AL 36922 Frost Dates
36922, near Pennington, AL: the frost window
Typically, the last spring freeze lands around 03/20, roughly 204 days out. Fall's first freeze usually shows up around 11/09, roughly 234 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Pennington 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
Pennington'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 03/20 isn't a guarantee
03/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/28 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.
Pennington against the rest of the dataset
About 234 days separate Pennington's last and first frost, putting it 9,811 of 40,283 ZIP codes nationally. Within AL, it ranks 443 of 809.
Learn more
Two guides worth reading on 36922: the frost range, on how to read the range around Pennington's dates instead of trusting one, and local microclimates, on what one yard in Pennington can differ from the 36922 normal.