Oak Grove, AL 35151 Frost Dates
35151, near Oak Grove, AL: the frost window
The last spring frost here typically falls around 04/02, about 217 days from today. Fall's first freeze usually shows up around 10/31, roughly 211 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Oak Grove in Zone 8a (10 to 15°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
Oak Grove'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.
Why 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/19 and only about 1 year in 10 sees frost after that.
Oak Grove against the rest of the dataset
At roughly 211 frost-free days, Oak Grove places 14,836 of 40,283 ZIP codes in this dataset. Within AL, it ranks 708 of 809.
Learn more
Two guides worth reading on 35151: zone vs. frost date, on why Zone 8a and Oak Grove's frost date answer different questions, and the frost range, on how to read the range around Oak Grove's dates instead of trusting one.