Morgan City, MS 38946 Frost Dates
Frost dates for Morgan City, MS, ZIP 38946
Typically, the last spring freeze lands around 03/08, roughly 192 days out. The first fall frost typically arrives around 11/20, about 255 frost-free days later.
The USDA Plant Hardiness Zone Map puts Morgan City in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 8b around Morgan City has about 12 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.
How much risk comes with planting early here
03/08 is the middle of 30 years of NOAA records, not a promise. Plant by 02/17 and you're betting against frost in roughly 9 years out of 10. 03/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Morgan City compares
Morgan City's growing season runs about 255 days, ranking 6,976 of 40,283 US ZIP codes measured here, longest to shortest. Within MS, it ranks 99 of 523.
Learn more
zone vs. frost date explains why Zone 8b and Morgan City's frost date answer different questions, and the frost range explains how to read the range around Morgan City's dates instead of trusting one.