Nunda, SD 57050 Frost Dates
When can you plant in Nunda, SD?
Around 05/02 is the usual last spring frost, about 247 days away. The first fall frost typically arrives around 10/05, about 156 frost-free days later.
Nunda sits in USDA Zone 4b (-25 to -20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 5 weeks of growing season left in Nunda before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/02 isn't a guarantee
05/02 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 Nunda compares
Nunda's growing season runs about 156 days, ranking 33,891 of 40,283 US ZIP codes measured here, longest to shortest. Within SD, it ranks 97 of 378.
Learn more
local microclimates covers what one yard in Nunda can differ from the 57050 normal. zone vs. frost date covers why Zone 4b and Nunda's frost date answer different questions.