Walnut Grove, MO 65645 Frost Dates
Walnut Grove, MO: when does the frost end?
Around 04/14 is the usual last spring frost, about 229 days away. Fall's first freeze usually shows up around 10/23, roughly 188 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Walnut Grove 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 Walnut Grove'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
04/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/29 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/02 and only about 1 year in 10 sees frost after that.
Walnut Grove against the rest of the dataset
Walnut Grove's growing season runs about 188 days, ranking 22,144 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 810 of 1,129.
Learn more
Before leaning on 65645's figures: the frost range explains how to read the range around Walnut Grove's dates instead of trusting one, while local microclimates explains what one yard in Walnut Grove can differ from the 65645 normal.