Trent, SD 57065 Frost Dates
Trent, SD: when does the frost end?
Typically, the last spring freeze lands around 05/01, roughly 246 days out. Fall's first freeze usually shows up around 10/04, roughly 155 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Trent in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 5 weeks until Trent'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
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Trent against the rest of the dataset
At roughly 155 frost-free days, Trent places 34,147 of 40,283 ZIP codes in this dataset. Within SD, it ranks 104 of 378.
Learn more
Before leaning on 57065's figures: local microclimates explains what one yard in Trent can differ from the 57065 normal, while zone vs. frost date explains why Zone 4b and Trent's frost date answer different questions.