Springfield, SD 57062 Frost Dates
When can you plant in Springfield, SD?
The last spring frost here typically falls around 05/01, about 246 days from today. The first fall frost typically arrives around 10/07, about 158 frost-free days later.
Zone 5a (-20 to -15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Springfield, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Springfield 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 04/18 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 Springfield compares
About 158 days separate Springfield's last and first frost, putting it 33,005 of 40,283 ZIP codes nationally. Within SD, it ranks 48 of 378.
Learn more
zone vs. frost date covers why Zone 5a and Springfield's frost date answer different questions. the frost range covers how to read the range around Springfield's dates instead of trusting one.