Mississippi frost dates

Across Mississippi, the average last spring frost is around March 20 and the average first fall frost around November 5 — roughly 230 frost-free days. USDA zones 7b, 8a, 8b, 9a.

Risk you accept	Last spring frost by	First fall frost by
Cautious (~10%)	April 3	October 22
Average (~50%)	March 20	November 5
Gambler (~90%)	March 6	November 19

→ Turn these into sowing dates with the Mississippi planting calendar, or look up an exact ZIP code.

Statewide average from NOAA/NCEI freeze normals. Cautious/gambler dates are about two weeks either side of the average.