Morris, MN 56267 Frost Dates
56267, near Morris, MN: the frost window
Around 05/04 is the usual last spring frost, about 249 days away. Fall's first freeze usually shows up around 10/01, roughly 150 days after the last spring frost.
Morris 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
Morris's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Morris's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Morris against the rest of the dataset
Morris's growing season runs about 150 days, ranking 35,278 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 515 of 943.
Learn more
Two guides worth reading on 56267: zone vs. frost date, on why Zone 4b and Morris's frost date answer different questions, and the frost range, on how to read the range around Morris's dates instead of trusting one.