Horn Lake, MS 38637 Frost Dates
When can you plant in Horn Lake, MS?
Around 03/16 is the usual last spring frost, about 200 days away. The first fall frost typically arrives around 11/16, about 244 frost-free days later.
The USDA Plant Hardiness Zone Map puts Horn Lake in Zone 8a (10 to 15°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
About 11 weeks of growing season left in Horn Lake before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/16 isn't a guarantee
03/16 is the middle of 30 years of NOAA records, not a promise. Plant by 02/27 and you're betting against frost in roughly 9 years out of 10. 04/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Horn Lake compares
Horn Lake's growing season runs about 244 days, ranking 8,204 of 40,283 US ZIP codes measured here, longest to shortest. Within MS, it ranks 200 of 523.
Learn more
the frost range covers how to read the range around Horn Lake's dates instead of trusting one. local microclimates covers what one yard in Horn Lake can differ from the 38637 normal.