River Falls, AL 36476 Frost Dates
Frost dates for River Falls, AL, ZIP 36476
The last spring frost here typically falls around 03/25, about 209 days from today. The first fall frost typically arrives around 11/09, about 230 frost-free days later.
River Falls 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 River Falls 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 03/25 isn't a guarantee
03/25 is the middle of 30 years of NOAA records, not a promise. Plant by 02/28 and you're betting against frost in roughly 9 years out of 10. 04/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How River Falls compares
River Falls's growing season runs about 230 days, ranking 10,464 of 40,283 US ZIP codes measured here, longest to shortest. Within AL, it ranks 514 of 809.
Learn more
zone vs. frost date explains why Zone 8b and River Falls's frost date answer different questions, and the frost range explains how to read the range around River Falls's dates instead of trusting one.