Morgan, MN 56266 Frost Dates
Frost dates for Morgan, MN, ZIP 56266
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/04, about 157 frost-free days later.
The USDA Plant Hardiness Zone Map puts Morgan 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
Zone 5a around Morgan 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.
Why 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 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 Morgan compares
About 157 days separate Morgan's last and first frost, putting it 33,394 of 40,283 ZIP codes nationally. Within MN, it ranks 305 of 943.
Learn more
the frost range explains how to read the range around Morgan's dates instead of trusting one, and local microclimates explains what one yard in Morgan can differ from the 56266 normal.