Fenton, MO 63026 Frost Dates
63026, near Fenton, MO: the frost window
Around 04/04 is the usual last spring frost, about 219 days away. Fall's first freeze usually shows up around 10/29, roughly 206 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Fenton in Zone 7a (0 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
Fenton's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/04 isn't a guarantee
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/21 and only about 1 year in 10 sees frost after that.
Fenton against the rest of the dataset
About 206 days separate Fenton's last and first frost, putting it 16,009 of 40,283 ZIP codes nationally. Within MO, it ranks 226 of 1,129.
Learn more
Two guides worth reading on 63026: the frost range, on how to read the range around Fenton's dates instead of trusting one, and local microclimates, on what one yard in Fenton can differ from the 63026 normal.