Festus, MO 63028 Frost Dates
Festus, MO: when does the frost end?
Typically, the last spring freeze lands around 04/09, roughly 224 days out. Fall's first freeze usually shows up around 10/26, roughly 197 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 Festus, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Festus's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/09 isn't a guarantee
04/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/25 and only about 1 year in 10 sees frost after that.
Festus against the rest of the dataset
At roughly 197 frost-free days, Festus places 18,638 of 40,283 ZIP codes in this dataset. Within MO, it ranks 532 of 1,129.
Learn more
Before leaning on 63028's figures: local microclimates explains what one yard in Festus can differ from the 63028 normal, while zone vs. frost date explains why Zone 6b and Festus's frost date answer different questions.