Wyndmere, ND 58081 Frost Dates
Wyndmere, ND: 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 09/29, roughly 145 days after the last spring frost.
Wyndmere 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 5 weeks until Wyndmere'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
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Wyndmere against the rest of the dataset
About 145 days separate Wyndmere's last and first frost, putting it 36,267 of 40,283 ZIP codes nationally. Within ND, it ranks 56 of 405.
Learn more
Before leaning on 58081's figures: local microclimates explains what one yard in Wyndmere can differ from the 58081 normal, while zone vs. frost date explains why Zone 4a and Wyndmere's frost date answer different questions.