Memphis, MO 63555 Frost Dates
63555, near Memphis, MO: the frost window
Typically, the last spring freeze lands around 04/23, roughly 238 days out. Fall's first freeze usually shows up around 10/17, roughly 176 days after the last spring frost.
Memphis 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.
Stretching the season past the first frost
Memphis's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/23 isn't a guarantee
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Memphis against the rest of the dataset
About 176 days separate Memphis's last and first frost, putting it 26,496 of 40,283 ZIP codes nationally. Within MO, it ranks 1,059 of 1,129.
Learn more
Two guides worth reading on 63555: local microclimates, on what one yard in Memphis can differ from the 63555 normal, and zone vs. frost date, on why Zone 6a and Memphis's frost date answer different questions.