Randolph, MN 55065 Frost Dates
Frost dates for Randolph, MN, ZIP 55065
Typically, the last spring freeze lands around 04/27, roughly 242 days out. The first fall frost typically arrives around 10/10, about 166 frost-free days later.
Randolph 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 Randolph has about 6 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.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Randolph compares
Randolph's growing season runs about 166 days, ranking 30,436 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 111 of 943.
Learn more
the frost range explains how to read the range around Randolph's dates instead of trusting one, and local microclimates explains what one yard in Randolph can differ from the 55065 normal.