Mountain Grove, MO 65768 Frost Dates
65768, near Mountain Grove, MO: the frost window
Typically, the last spring freeze lands around 04/14, roughly 229 days out. Fall's first freeze usually shows up around 10/25, roughly 193 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Mountain Grove in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Mountain Grove's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/14 isn't a guarantee
04/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Mountain Grove against the rest of the dataset
At roughly 193 frost-free days, Mountain Grove places 19,883 of 40,283 ZIP codes in this dataset. Within MO, it ranks 671 of 1,129.
Learn more
Two guides worth reading on 65768: zone vs. frost date, on why Zone 7a and Mountain Grove's frost date answer different questions, and the frost range, on how to read the range around Mountain Grove's dates instead of trusting one.