Grand Meadow, MN 55936 Frost Dates
55936, near Grand Meadow, MN: the frost window
The last spring frost here typically falls around 05/06, about 251 days from today. Fall's first freeze usually shows up around 10/01, roughly 146 days after the last spring frost.
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 Grand Meadow, not a forecast for this year.
Stretching the season past the first frost
Grand Meadow'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.
How much risk comes with planting early here
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Grand Meadow against the rest of the dataset
At roughly 146 frost-free days, Grand Meadow places 36,065 of 40,283 ZIP codes in this dataset. Within MN, it ranks 619 of 943.
Learn more
Two guides worth reading on 55936: zone vs. frost date, on why Zone 4b and Grand Meadow's frost date answer different questions, and the frost range, on how to read the range around Grand Meadow's dates instead of trusting one.