Ceylon, MN 56121 Frost Dates
Frost dates for Ceylon, MN, ZIP 56121
Typically, the last spring freeze lands around 04/28, roughly 243 days out. The first fall frost typically arrives around 10/08, about 162 frost-free days later.
Zone 5a (-20 to -15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Ceylon, not a forecast for this year.
What to do before the first frost
Zone 5a around Ceylon 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.
The actual range around Ceylon's last frost
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/13 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ceylon compares
At roughly 162 frost-free days, Ceylon places 31,863 of 40,283 ZIP codes in this dataset. Within MN, it ranks 188 of 943.
Learn more
local microclimates explains what one yard in Ceylon can differ from the 56121 normal, and zone vs. frost date explains why Zone 5a and Ceylon's frost date answer different questions.