Jamesport, MO 64648 Frost Dates
Jamesport, MO: when does the frost end?
Around 04/19 is the usual last spring frost, about 234 days away. Fall's first freeze usually shows up around 10/21, roughly 184 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Jamesport 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 8 weeks until Jamesport's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/19 isn't a guarantee
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/04 and only about 1 year in 10 sees frost after that.
Jamesport against the rest of the dataset
At roughly 184 frost-free days, Jamesport places 23,617 of 40,283 ZIP codes in this dataset. Within MO, it ranks 913 of 1,129.
Learn more
Before leaning on 64648's figures: local microclimates explains what one yard in Jamesport can differ from the 64648 normal, while zone vs. frost date explains why Zone 6a and Jamesport's frost date answer different questions.