Renville, MN 56284 Frost Dates
Renville, MN: when does the frost end?
Typically, the last spring freeze lands around 05/06, roughly 251 days out. Fall's first freeze usually shows up around 10/01, roughly 146 days after the last spring frost.
Renville sits in USDA Zone 4b (-25 to -20°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 5 weeks until Renville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/06 isn't a guarantee
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 05/20 and only about 1 year in 10 sees frost after that.
Renville against the rest of the dataset
Renville's growing season runs about 146 days, ranking 36,061 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 618 of 943.
Learn more
Before leaning on 56284's figures: zone vs. frost date explains why Zone 4b and Renville's frost date answer different questions, while the frost range explains how to read the range around Renville's dates instead of trusting one.