Orr, MN 55771 Frost Dates
Orr, MN: when does the frost end?
Typically, the last spring freeze lands around 06/02, roughly 278 days out. Fall's first freeze usually shows up around 09/15, roughly 102 days after the last spring frost.
Orr sits in USDA Zone 3b (-35 to -30°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 3 weeks until Orr's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Orr's last frost
06/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/17 and only about 1 year in 10 sees frost after that.
Orr against the rest of the dataset
Orr's growing season runs about 102 days, ranking 39,672 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 923 of 943.
Learn more
Before leaning on 55771's figures: zone vs. frost date explains why Zone 3b and Orr's frost date answer different questions, while the frost range explains how to read the range around Orr's dates instead of trusting one.