Jefferson City, MO 65109 Frost Dates
Jefferson City, MO: when does the frost end?
The last spring frost here typically falls around 04/08, about 223 days from today. Fall's first freeze usually shows up around 10/31, roughly 205 days after the last spring frost.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Jefferson City, not a forecast for this year.
Stretching the season past the first frost
With roughly 9 weeks until Jefferson City'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
04/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/23 and only about 1 year in 10 sees frost after that.
Jefferson City against the rest of the dataset
At roughly 205 frost-free days, Jefferson City places 16,177 of 40,283 ZIP codes in this dataset. Within MO, it ranks 244 of 1,129.
Learn more
Before leaning on 65109's figures: local microclimates explains what one yard in Jefferson City can differ from the 65109 normal, while zone vs. frost date explains why Zone 6b and Jefferson City's frost date answer different questions.