Pipestone, MN 56164 Frost Dates
Frost dates for Pipestone, MN, ZIP 56164
The last spring frost here typically falls around 05/04, about 249 days from today. The first fall frost typically arrives around 10/02, about 152 frost-free days later.
Pipestone sits in USDA Zone 4b (-25 to -20°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 4b around Pipestone 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.
How much risk comes with planting early here
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pipestone compares
At roughly 152 frost-free days, Pipestone places 34,761 of 40,283 ZIP codes in this dataset. Within MN, it ranks 440 of 943.
Learn more
local microclimates explains what one yard in Pipestone can differ from the 56164 normal, and zone vs. frost date explains why Zone 4b and Pipestone's frost date answer different questions.