Warba, MN 55742 Frost Dates
Warba, MN: when does the frost end?
Around 05/17 is the usual last spring frost, about 262 days away. Fall's first freeze usually shows up around 09/24, roughly 130 days after the last spring frost.
Warba 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 Warba's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/17 isn't a guarantee
05/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/31 and only about 1 year in 10 sees frost after that.
Warba against the rest of the dataset
Warba's growing season runs about 130 days, ranking 38,416 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 857 of 943.
Learn more
Before leaning on 55742's figures: the frost range explains how to read the range around Warba's dates instead of trusting one, while local microclimates explains what one yard in Warba can differ from the 55742 normal.