Tulare, SD 57476 Frost Dates
Tulare, SD: when does the frost end?
Typically, the last spring freeze lands around 05/08, roughly 253 days out. Fall's first freeze usually shows up around 10/01, roughly 145 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 Tulare, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Tulare's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/08 isn't a guarantee
05/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/21 and only about 1 year in 10 sees frost after that.
Tulare against the rest of the dataset
At roughly 145 frost-free days, Tulare places 36,291 of 40,283 ZIP codes in this dataset. Within SD, it ranks 246 of 378.
Learn more
Before leaning on 57476's figures: the frost range explains how to read the range around Tulare's dates instead of trusting one, while local microclimates explains what one yard in Tulare can differ from the 57476 normal.