Fountain, MN 55935 Frost Dates
When can you plant in Fountain, MN?
Typically, the last spring freeze lands around 05/14, roughly 259 days out. The first fall frost typically arrives around 09/28, about 136 frost-free days later.
Zone 4b (-25 to -20°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 Fountain, not a forecast for this year.
What to do before the first frost
About 4 weeks of growing season left in Fountain before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/14 is the middle of 30 years of NOAA records, not a promise. Plant by 05/01 and you're betting against frost in roughly 9 years out of 10. 05/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Fountain compares
About 136 days separate Fountain's last and first frost, putting it 37,774 of 40,283 ZIP codes nationally. Within MN, it ranks 800 of 943.
Learn more
the frost range covers how to read the range around Fountain's dates instead of trusting one. local microclimates covers what one yard in Fountain can differ from the 55935 normal.