Armstrong, MO 65230 Frost Dates
Armstrong, MO: when does the frost end?
The last spring frost here typically falls around 04/12, about 227 days from today. Fall's first freeze usually shows up around 10/22, roughly 190 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Armstrong 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 Armstrong'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 03/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/29 and only about 1 year in 10 sees frost after that.
Armstrong against the rest of the dataset
About 190 days separate Armstrong's last and first frost, putting it 21,305 of 40,283 ZIP codes nationally. Within MO, it ranks 777 of 1,129.
Learn more
Before leaning on 65230's figures: local microclimates explains what one yard in Armstrong can differ from the 65230 normal, while zone vs. frost date explains why Zone 6b and Armstrong's frost date answer different questions.