Webster Groves, MO 63119 Frost Dates
63119, near Webster Groves, MO: the frost window
Around 04/01 is the usual last spring frost, about 216 days away. Fall's first freeze usually shows up around 11/04, roughly 218 days after the last spring frost.
Webster Groves sits in USDA Zone 7a (0 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
Webster Groves's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/18 and only about 1 year in 10 sees frost after that.
Webster Groves against the rest of the dataset
At roughly 218 frost-free days, Webster Groves places 13,209 of 40,283 ZIP codes in this dataset. Within MO, it ranks 75 of 1,129.
Learn more
Two guides worth reading on 63119: the frost range, on how to read the range around Webster Groves's dates instead of trusting one, and local microclimates, on what one yard in Webster Groves can differ from the 63119 normal.