White, SD 57276 Frost Dates
White, 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 10/01, roughly 145 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts White 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 White'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 04/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
White against the rest of the dataset
White's growing season runs about 145 days, ranking 36,261 of 40,283 US ZIP codes measured here, longest to shortest. Within SD, it ranks 240 of 378.
Learn more
Before leaning on 57276's figures: local microclimates explains what one yard in White can differ from the 57276 normal, while zone vs. frost date explains why Zone 4b and White's frost date answer different questions.