Corcoran, MN 55340 Frost Dates
Corcoran, MN: when does the frost end?
Around 04/29 is the usual last spring frost, about 244 days away. Fall's first freeze usually shows up around 10/12, roughly 163 days after the last spring frost.
Corcoran 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.
Stretching the season past the first frost
With roughly 6 weeks until Corcoran's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Corcoran's last frost
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Corcoran against the rest of the dataset
About 163 days separate Corcoran's last and first frost, putting it 31,360 of 40,283 ZIP codes nationally. Within MN, it ranks 163 of 943.
Learn more
Before leaning on 55340's figures: zone vs. frost date explains why Zone 4b and Corcoran's frost date answer different questions, while the frost range explains how to read the range around Corcoran's dates instead of trusting one.