Lone Grove, OK 73403 Frost Dates
73403, near Lone Grove, OK: the frost window
Typically, the last spring freeze lands around 04/06, roughly 221 days out. Fall's first freeze usually shows up around 11/01, roughly 204 days after the last spring frost.
Zone 8a (10 to 15°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 Lone Grove, not a forecast for this year.
Stretching the season past the first frost
Lone Grove's growing season runs out in roughly 9 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
04/06 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 04/25 and only about 1 year in 10 sees frost after that.
Lone Grove against the rest of the dataset
At roughly 204 frost-free days, Lone Grove places 16,571 of 40,283 ZIP codes in this dataset. Within OK, it ranks 595 of 764.
Learn more
Two guides worth reading on 73403: zone vs. frost date, on why Zone 8a and Lone Grove's frost date answer different questions, and the frost range, on how to read the range around Lone Grove's dates instead of trusting one.