Borup, MN 56519 Frost Dates
Borup, MN: when does the frost end?
The last spring frost here typically falls around 05/11, about 256 days from today. Fall's first freeze usually shows up around 09/27, roughly 137 days after the last spring frost.
Borup sits in USDA Zone 4a (-30 to -25°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 4 weeks until Borup's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Borup's last frost
05/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/25 and only about 1 year in 10 sees frost after that.
Borup against the rest of the dataset
Borup's growing season runs about 137 days, ranking 37,601 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 790 of 943.
Learn more
Before leaning on 56519's figures: local microclimates explains what one yard in Borup can differ from the 56519 normal, while zone vs. frost date explains why Zone 4a and Borup's frost date answer different questions.