Kimball, SD 57355 Frost Dates
Frost dates for Kimball, SD, ZIP 57355
Typically, the last spring freeze lands around 05/03, roughly 248 days out. The first fall frost typically arrives around 10/05, about 153 frost-free days later.
Kimball sits in USDA Zone 5a (-20 to -15°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
Zone 5a around Kimball has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Kimball's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kimball compares
Kimball's growing season runs about 153 days, ranking 34,592 of 40,283 US ZIP codes measured here, longest to shortest. Within SD, it ranks 115 of 378.
Learn more
zone vs. frost date explains why Zone 5a and Kimball's frost date answer different questions, and the frost range explains how to read the range around Kimball's dates instead of trusting one.