Grant City, MO 64456 Frost Dates
64456, near Grant City, MO: the frost window
Typically, the last spring freeze lands around 04/24, roughly 239 days out. Fall's first freeze usually shows up around 10/14, roughly 172 days after the last spring frost.
Grant City sits in USDA Zone 5b (-15 to -10°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
Grant City'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.
The actual range around Grant City's last frost
04/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Grant City against the rest of the dataset
Grant City's growing season runs about 172 days, ranking 28,416 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 1,097 of 1,129.
Learn more
Two guides worth reading on 64456: the frost range, on how to read the range around Grant City's dates instead of trusting one, and local microclimates, on what one yard in Grant City can differ from the 64456 normal.