Oak Hill, AL 36741 Frost Dates
Oak Hill, AL: when does the frost end?
Around 03/18 is the usual last spring frost, about 202 days away. Fall's first freeze usually shows up around 11/11, roughly 241 days after the last spring frost.
Zone 8b (15 to 20°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 Oak Hill, not a forecast for this year.
Stretching the season past the first frost
With roughly 11 weeks until Oak Hill's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/18 isn't a guarantee
03/18 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 04/05 and only about 1 year in 10 sees frost after that.
Oak Hill against the rest of the dataset
About 241 days separate Oak Hill's last and first frost, putting it 8,657 of 40,283 ZIP codes nationally. Within AL, it ranks 289 of 809.
Learn more
Before leaning on 36741's figures: zone vs. frost date explains why Zone 8b and Oak Hill's frost date answer different questions, while the frost range explains how to read the range around Oak Hill's dates instead of trusting one.