Union, AL 35462 Frost Dates
Frost dates for Union, AL, ZIP 35462
The last spring frost here typically falls around 03/19, about 203 days from today. The first fall frost typically arrives around 11/08, about 239 frost-free days later.
Union sits in USDA Zone 8b (15 to 20°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 8b around Union has about 10 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 03/19 isn't a guarantee
03/19 is the middle of 30 years of NOAA records, not a promise. Plant by 02/26 and you're betting against frost in roughly 9 years out of 10. 04/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Union compares
Union's growing season runs about 239 days, ranking 8,908 of 40,283 US ZIP codes measured here, longest to shortest. Within AL, it ranks 337 of 809.
Learn more
zone vs. frost date explains why Zone 8b and Union's frost date answer different questions, and the frost range explains how to read the range around Union's dates instead of trusting one.