Clarks Grove, MN 56016 Frost Dates
Clarks Grove, MN: when does the frost end?
Around 04/27 is the usual last spring frost, about 242 days away. Fall's first freeze usually shows up around 10/09, roughly 164 days after the last spring frost.
Clarks Grove sits in USDA Zone 5a (-20 to -15°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 Clarks Grove's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Clarks Grove against the rest of the dataset
At roughly 164 frost-free days, Clarks Grove places 31,096 of 40,283 ZIP codes in this dataset. Within MN, it ranks 116 of 943.
Learn more
Before leaning on 56016's figures: local microclimates explains what one yard in Clarks Grove can differ from the 56016 normal, while zone vs. frost date explains why Zone 5a and Clarks Grove's frost date answer different questions.