Shannon, MS 38868 Frost Dates
Frost dates for Shannon, MS, ZIP 38868
The last spring frost here typically falls around 03/21, about 205 days from today. The first fall frost typically arrives around 11/09, about 233 frost-free days later.
Shannon 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 Shannon 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 03/21 isn't a guarantee
03/21 is the middle of 30 years of NOAA records, not a promise. Plant by 03/01 and you're betting against frost in roughly 9 years out of 10. 04/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Shannon compares
Shannon's growing season runs about 233 days, ranking 9,925 of 40,283 US ZIP codes measured here, longest to shortest. Within MS, it ranks 347 of 523.
Learn more
local microclimates explains what one yard in Shannon can differ from the 38868 normal, and zone vs. frost date explains why Zone 8a and Shannon's frost date answer different questions.