Harris, MO 64645 Frost Dates
When can you plant in Harris, MO?
The last spring frost here typically falls around 04/25, about 240 days from today. The first fall frost typically arrives around 10/15, about 174 frost-free days later.
Harris sits in USDA Zone 6a (-10 to -5°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.
What to do before the first frost
About 7 weeks of growing season left in Harris before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Harris compares
At roughly 174 frost-free days, Harris places 27,663 of 40,283 ZIP codes in this dataset. Within MO, it ranks 1,092 of 1,129.
Learn more
local microclimates covers what one yard in Harris can differ from the 64645 normal. zone vs. frost date covers why Zone 6a and Harris's frost date answer different questions.