Warroad, MN 56711 Frost Dates
Warroad, MN: when does the frost end?
Around 05/16 is the usual last spring frost, about 261 days away. Fall's first freeze usually shows up around 09/24, roughly 129 days after the last spring frost.
Warroad 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 4 weeks until Warroad's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/30 and only about 1 year in 10 sees frost after that.
Warroad against the rest of the dataset
At roughly 129 frost-free days, Warroad places 38,468 of 40,283 ZIP codes in this dataset. Within MN, it ranks 865 of 943.
Learn more
Before leaning on 56711's figures: zone vs. frost date explains why Zone 3b and Warroad's frost date answer different questions, while the frost range explains how to read the range around Warroad's dates instead of trusting one.