Summerset, SD 57718 Frost Dates
When can you plant in Summerset, SD?
Around 05/10 is the usual last spring frost, about 255 days away. The first fall frost typically arrives around 10/05, about 147 frost-free days later.
The USDA Plant Hardiness Zone Map puts Summerset 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 Summerset before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Summerset's last frost
05/10 is the middle of 30 years of NOAA records, not a promise. Plant by 04/27 and you're betting against frost in roughly 9 years out of 10. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Summerset compares
At roughly 147 frost-free days, Summerset places 35,909 of 40,283 ZIP codes in this dataset. Within SD, it ranks 211 of 378.
Learn more
the frost range covers how to read the range around Summerset's dates instead of trusting one. local microclimates covers what one yard in Summerset can differ from the 57718 normal.