Bourbon, MO 65441 Frost Dates
Bourbon, 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.
Zone 6b (-5 to 0°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 Bourbon, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Bourbon'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
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.
Bourbon against the rest of the dataset
At roughly 164 frost-free days, Bourbon places 31,017 of 40,283 ZIP codes in this dataset. Within MO, it ranks 1,123 of 1,129.
Learn more
Before leaning on 65441's figures: the frost range explains how to read the range around Bourbon's dates instead of trusting one, while local microclimates explains what one yard in Bourbon can differ from the 65441 normal.