Wilburton, OK 74578 Frost Dates
74578, near Wilburton, OK: the frost window
The last spring frost here typically falls around 04/02, about 217 days from today. Fall's first freeze usually shows up around 11/05, roughly 218 days after the last spring frost.
Zone 7b (5 to 10°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 Wilburton, not a forecast for this year.
Stretching the season past the first frost
Wilburton'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.
The actual range around Wilburton's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/19 and only about 1 year in 10 sees frost after that.
Wilburton against the rest of the dataset
At roughly 218 frost-free days, Wilburton places 13,279 of 40,283 ZIP codes in this dataset. Within OK, it ranks 230 of 764.
Learn more
Two guides worth reading on 74578: the frost range, on how to read the range around Wilburton's dates instead of trusting one, and local microclimates, on what one yard in Wilburton can differ from the 74578 normal.