Knob Noster, MO 65336 Frost Dates
Knob Noster, MO: when does the frost end?
The last spring frost here typically falls around 04/14, about 229 days from today. Fall's first freeze usually shows up around 10/21, roughly 189 days after the last spring frost.
Knob Noster 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 Knob Noster's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/14 isn't a guarantee
04/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/04 and only about 1 year in 10 sees frost after that.
Knob Noster against the rest of the dataset
Knob Noster's growing season runs about 189 days, ranking 21,580 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 790 of 1,129.
Learn more
Before leaning on 65336's figures: zone vs. frost date explains why Zone 6b and Knob Noster's frost date answer different questions, while the frost range explains how to read the range around Knob Noster's dates instead of trusting one.