Wendell, MN 56590 Frost Dates
Wendell, MN: when does the frost end?
Typically, the last spring freeze lands around 05/04, roughly 249 days out. Fall's first freeze usually shows up around 10/05, roughly 152 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Wendell in Zone 4a (-30 to -25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 5 weeks until Wendell's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/20 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.
Wendell against the rest of the dataset
Wendell's growing season runs about 152 days, ranking 34,907 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 473 of 943.
Learn more
Before leaning on 56590's figures: local microclimates explains what one yard in Wendell can differ from the 56590 normal, while zone vs. frost date explains why Zone 4a and Wendell's frost date answer different questions.