Clarkson Valley, MO 63005 Frost Dates
Clarkson Valley, 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 10/23, roughly 193 days after the last spring frost.
Clarkson Valley sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 8 weeks until Clarkson Valley's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/12 isn't a guarantee
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 04/27 and only about 1 year in 10 sees frost after that.
Clarkson Valley against the rest of the dataset
Clarkson Valley's growing season runs about 193 days, ranking 19,936 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 672 of 1,129.
Learn more
Before leaning on 63005's figures: local microclimates explains what one yard in Clarkson Valley can differ from the 63005 normal, while zone vs. frost date explains why Zone 6b and Clarkson Valley's frost date answer different questions.