New London, MO 63459 Frost Dates
When can you plant in New London, MO?
Typically, the last spring freeze lands around 04/04, roughly 219 days out. The first fall frost typically arrives around 11/04, about 212 frost-free days later.
Zone 6a (-10 to -5°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 New London, not a forecast for this year.
What to do before the first frost
About 10 weeks of growing season left in New London before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around New London's last frost
04/04 is the middle of 30 years of NOAA records, not a promise. Plant by 03/20 and you're betting against frost in roughly 9 years out of 10. 04/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How New London compares
At roughly 212 frost-free days, New London places 14,637 of 40,283 ZIP codes in this dataset. Within MO, it ranks 146 of 1,129.
Learn more
zone vs. frost date covers why Zone 6a and New London's frost date answer different questions. the frost range covers how to read the range around New London's dates instead of trusting one.