Dover, MO 64022 Frost Dates
Frost dates for Dover, MO, ZIP 64022
Around 04/10 is the usual last spring frost, about 225 days away. The first fall frost typically arrives around 10/24, about 195 frost-free days later.
Dover 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.
What to do before the first frost
Zone 6b around Dover has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/10 is the middle of 30 years of NOAA records, not a promise. Plant by 03/26 and you're betting against frost in roughly 9 years out of 10. 04/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dover compares
About 195 days separate Dover's last and first frost, putting it 19,392 of 40,283 ZIP codes nationally. Within MO, it ranks 627 of 1,129.
Learn more
zone vs. frost date explains why Zone 6b and Dover's frost date answer different questions, and the frost range explains how to read the range around Dover's dates instead of trusting one.