Steelville, MO 65586 Frost Dates
Steelville, MO: when does the frost end?
Typically, the last spring freeze lands around 04/26, roughly 241 days out. Fall's first freeze usually shows up around 10/08, roughly 164 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Steelville in Zone 6a (-10 to -5°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 6 weeks until Steelville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/26 isn't a guarantee
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Steelville against the rest of the dataset
At roughly 164 frost-free days, Steelville places 31,023 of 40,283 ZIP codes in this dataset. Within MO, it ranks 1,126 of 1,129.
Learn more
Before leaning on 65586's figures: the frost range explains how to read the range around Steelville's dates instead of trusting one, while local microclimates explains what one yard in Steelville can differ from the 65586 normal.