Kosciusko, MS 39090 Frost Dates
Frost dates for Kosciusko, MS, ZIP 39090
Typically, the last spring freeze lands around 03/18, roughly 202 days out. The first fall frost typically arrives around 11/11, about 239 frost-free days later.
Kosciusko 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 Kosciusko has about 11 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 03/18 isn't a guarantee
03/18 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. 04/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kosciusko compares
Kosciusko's growing season runs about 239 days, ranking 8,810 of 40,283 US ZIP codes measured here, longest to shortest. Within MS, it ranks 261 of 523.
Learn more
the frost range explains how to read the range around Kosciusko's dates instead of trusting one, and local microclimates explains what one yard in Kosciusko can differ from the 39090 normal.