Wilburton, OK 74559 Frost Dates
Frost dates for Wilburton, OK, ZIP 74559
The last spring frost here typically falls around 04/02, about 217 days from today. The first fall frost typically arrives around 11/05, about 218 frost-free days later.
Wilburton 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.
What to do before the first frost
Zone 7b around Wilburton has about 10 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/12 and you're betting against frost in roughly 9 years out of 10. 04/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Wilburton compares
Wilburton's growing season runs about 218 days, ranking 13,278 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 229 of 764.
Learn more
local microclimates explains what one yard in Wilburton can differ from the 74559 normal, and zone vs. frost date explains why Zone 7b and Wilburton's frost date answer different questions.