Creve Coeur, MO 63141 Frost Dates
Creve Coeur, MO: when does the frost end?
Around 04/04 is the usual last spring frost, about 219 days away. Fall's first freeze usually shows up around 10/29, roughly 206 days after the last spring frost.
Zone 7a (0 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 Creve Coeur, not a forecast for this year.
Stretching the season past the first frost
With roughly 9 weeks until Creve Coeur'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
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/21 and only about 1 year in 10 sees frost after that.
Creve Coeur against the rest of the dataset
At roughly 206 frost-free days, Creve Coeur places 15,966 of 40,283 ZIP codes in this dataset. Within MO, it ranks 222 of 1,129.
Learn more
Before leaning on 63141's figures: zone vs. frost date explains why Zone 7a and Creve Coeur's frost date answer different questions, while the frost range explains how to read the range around Creve Coeur's dates instead of trusting one.