Hinckley, MN 55037 Frost Dates
Frost dates for Hinckley, MN, ZIP 55037
Around 05/16 is the usual last spring frost, about 261 days away. The first fall frost typically arrives around 09/24, about 130 frost-free days later.
The USDA Plant Hardiness Zone Map puts Hinckley in Zone 4a (-30 to -25°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
Zone 4a around Hinckley has about 4 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
05/16 is the middle of 30 years of NOAA records, not a promise. Plant by 05/03 and you're betting against frost in roughly 9 years out of 10. 05/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hinckley compares
About 130 days separate Hinckley's last and first frost, putting it 38,383 of 40,283 ZIP codes nationally. Within MN, it ranks 846 of 943.
Learn more
the frost range explains how to read the range around Hinckley's dates instead of trusting one, and local microclimates explains what one yard in Hinckley can differ from the 55037 normal.