Fairview, SD 57027 Frost Dates
Fairview, SD: when does the frost end?
Around 05/02 is the usual last spring frost, about 247 days away. Fall's first freeze usually shows up around 10/02, roughly 151 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Fairview in Zone 5a (-20 to -15°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 Fairview's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/02 isn't a guarantee
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Fairview against the rest of the dataset
About 151 days separate Fairview's last and first frost, putting it 35,211 of 40,283 ZIP codes nationally. Within SD, it ranks 166 of 378.
Learn more
Before leaning on 57027's figures: zone vs. frost date explains why Zone 5a and Fairview's frost date answer different questions, while the frost range explains how to read the range around Fairview's dates instead of trusting one.