Stilwell, OK 72729 Frost Dates
72729, near Stilwell, OK: the frost window
Typically, the last spring freeze lands around 04/09, roughly 224 days out. Fall's first freeze usually shows up around 10/28, roughly 201 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Stilwell in Zone 7b (5 to 10°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
Stilwell'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.
Why 04/09 isn't a guarantee
04/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/28 and only about 1 year in 10 sees frost after that.
Stilwell against the rest of the dataset
At roughly 201 frost-free days, Stilwell places 17,506 of 40,283 ZIP codes in this dataset. Within OK, it ranks 638 of 764.
Learn more
Two guides worth reading on 72729: the frost range, on how to read the range around Stilwell's dates instead of trusting one, and local microclimates, on what one yard in Stilwell can differ from the 72729 normal.