Okmulgee, OK 74447 Frost Dates
74447, near Okmulgee, OK: the frost window
The last spring frost here typically falls around 03/24, about 208 days from today. Fall's first freeze usually shows up around 11/09, roughly 229 days after the last spring frost.
Okmulgee sits in USDA Zone 7b (5 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
Okmulgee'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 Okmulgee's last frost
03/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/10 and only about 1 year in 10 sees frost after that.
Okmulgee against the rest of the dataset
Okmulgee's growing season runs about 229 days, ranking 10,562 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 30 of 764.
Learn more
Two guides worth reading on 74447: zone vs. frost date, on why Zone 7b and Okmulgee's frost date answer different questions, and the frost range, on how to read the range around Okmulgee's dates instead of trusting one.