Crooks, SD 57055 Frost Dates
When can you plant in Crooks, SD?
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/06, about 157 frost-free days later.
The USDA Plant Hardiness Zone Map puts Crooks in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 6 weeks of growing season left in Crooks 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 Crooks compares
Crooks's growing season runs about 157 days, ranking 33,358 of 40,283 US ZIP codes measured here, longest to shortest. Within SD, it ranks 70 of 378.
Learn more
the frost range covers how to read the range around Crooks's dates instead of trusting one. local microclimates covers what one yard in Crooks can differ from the 57055 normal.