Freeman, SD 57029 Frost Dates
When can you plant in Freeman, SD?
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/04, about 156 frost-free days later.
The USDA Plant Hardiness Zone Map puts Freeman in Zone 5a (-20 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 5 weeks of growing season left in Freeman before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/01 isn't a guarantee
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Freeman compares
Freeman's growing season runs about 156 days, ranking 33,693 of 40,283 US ZIP codes measured here, longest to shortest. Within SD, it ranks 81 of 378.
Learn more
local microclimates covers what one yard in Freeman can differ from the 57029 normal. zone vs. frost date covers why Zone 5a and Freeman's frost date answer different questions.