Charleston, MO 63834 Frost Dates
Charleston, MO: when does the frost end?
Around 04/02 is the usual last spring frost, about 217 days away. Fall's first freeze usually shows up around 10/31, roughly 211 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Charleston in Zone 7b (5 to 10°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 9 weeks until Charleston's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Charleston's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/17 and only about 1 year in 10 sees frost after that.
Charleston against the rest of the dataset
At roughly 211 frost-free days, Charleston places 14,759 of 40,283 ZIP codes in this dataset. Within MO, it ranks 168 of 1,129.
Learn more
Before leaning on 63834's figures: the frost range explains how to read the range around Charleston's dates instead of trusting one, while local microclimates explains what one yard in Charleston can differ from the 63834 normal.