Alabaster, AL 35137 Frost Dates
Alabaster, AL: when does the frost end?
The last spring frost here typically falls around 03/12, about 196 days from today. Fall's first freeze usually shows up around 11/16, roughly 248 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 Alabaster, not a forecast for this year.
Stretching the season past the first frost
With roughly 11 weeks until Alabaster's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/12 isn't a guarantee
03/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/31 and only about 1 year in 10 sees frost after that.
Alabaster against the rest of the dataset
Alabaster's growing season runs about 248 days, ranking 7,677 of 40,283 US ZIP codes measured here, longest to shortest. Within AL, it ranks 215 of 809.
Learn more
Before leaning on 35137's figures: zone vs. frost date explains why Zone 8b and Alabaster's frost date answer different questions, while the frost range explains how to read the range around Alabaster's dates instead of trusting one.