Foster, MO 64745 Frost Dates
Foster, MO: when does the frost end?
Typically, the last spring freeze lands around 04/12, roughly 227 days out. Fall's first freeze usually shows up around 10/23, roughly 192 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Foster 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 Foster'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
04/12 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 04/28 and only about 1 year in 10 sees frost after that.
Foster against the rest of the dataset
Foster's growing season runs about 192 days, ranking 20,601 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 712 of 1,129.
Learn more
Before leaning on 64745's figures: zone vs. frost date explains why Zone 6b and Foster's frost date answer different questions, while the frost range explains how to read the range around Foster's dates instead of trusting one.