Marietta, MS 38859 Frost Dates
Frost dates for Marietta, MS, ZIP 38859
Typically, the last spring freeze lands around 04/01, roughly 216 days out. The first fall frost typically arrives around 11/03, about 216 frost-free days later.
Marietta 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 Marietta 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 04/01 isn't a guarantee
04/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/15 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 Marietta compares
Marietta's growing season runs about 216 days, ranking 13,916 of 40,283 US ZIP codes measured here, longest to shortest. Within MS, it ranks 480 of 523.
Learn more
zone vs. frost date explains why Zone 8a and Marietta's frost date answer different questions, and the frost range explains how to read the range around Marietta's dates instead of trusting one.