Pilot Knob, MO 63650 Frost Dates
Pilot Knob, MO: when does the frost end?
Typically, the last spring freeze lands around 04/13, roughly 228 days out. Fall's first freeze usually shows up around 10/21, roughly 191 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Pilot Knob in Zone 6b (-5 to 0°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 Pilot Knob'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
04/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Pilot Knob against the rest of the dataset
About 191 days separate Pilot Knob's last and first frost, putting it 20,858 of 40,283 ZIP codes nationally. Within MO, it ranks 750 of 1,129.
Learn more
Before leaning on 63650's figures: local microclimates explains what one yard in Pilot Knob can differ from the 63650 normal, while zone vs. frost date explains why Zone 6b and Pilot Knob's frost date answer different questions.