Jasper, AL 35503 Frost Dates
Frost dates for Jasper, AL, ZIP 35503
Around 03/30 is the usual last spring frost, about 214 days away. The first fall frost typically arrives around 11/04, about 220 frost-free days later.
Jasper 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 Jasper 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 03/30 isn't a guarantee
03/30 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 Jasper compares
At roughly 220 frost-free days, Jasper places 12,758 of 40,283 ZIP codes in this dataset. Within AL, it ranks 632 of 809.
Learn more
the frost range explains how to read the range around Jasper's dates instead of trusting one, and local microclimates explains what one yard in Jasper can differ from the 35503 normal.