Onida, SD 57564 Frost Dates
Onida, SD: when does the frost end?
Around 05/06 is the usual last spring frost, about 251 days away. Fall's first freeze usually shows up around 10/03, roughly 148 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Onida in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 5 weeks until Onida's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/21 and only about 1 year in 10 sees frost after that.
Onida against the rest of the dataset
About 148 days separate Onida's last and first frost, putting it 35,771 of 40,283 ZIP codes nationally. Within SD, it ranks 202 of 378.
Learn more
Before leaning on 57564's figures: the frost range explains how to read the range around Onida's dates instead of trusting one, while local microclimates explains what one yard in Onida can differ from the 57564 normal.