Bon Air, AL 35032 Frost Dates
Frost dates for Bon Air, AL, ZIP 35032
Around 03/31 is the usual last spring frost, about 215 days away. The first fall frost typically arrives around 11/02, about 216 frost-free days later.
Bon Air sits in USDA Zone 8a (10 to 15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 8a around Bon Air has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 03/31 isn't a guarantee
03/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/10 and you're betting against frost in roughly 9 years out of 10. 04/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bon Air compares
At roughly 216 frost-free days, Bon Air places 13,921 of 40,283 ZIP codes in this dataset. Within AL, it ranks 671 of 809.
Learn more
zone vs. frost date explains why Zone 8a and Bon Air's frost date answer different questions, and the frost range explains how to read the range around Bon Air's dates instead of trusting one.