Faith, SD 57626 Frost Dates
Faith, SD: when does the frost end?
Around 05/06 is the usual last spring frost, about 251 days away. Fall's first freeze usually shows up around 10/05, roughly 151 days after the last spring frost.
Zone 4b (-25 to -20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Faith, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Faith'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.
Faith against the rest of the dataset
At roughly 151 frost-free days, Faith places 35,154 of 40,283 ZIP codes in this dataset. Within SD, it ranks 157 of 378.
Learn more
Before leaning on 57626's figures: local microclimates explains what one yard in Faith can differ from the 57626 normal, while zone vs. frost date explains why Zone 4b and Faith's frost date answer different questions.