Milburn, OK 73450 Frost Dates
When can you plant in Milburn, OK?
Typically, the last spring freeze lands around 03/31, roughly 215 days out. The first fall frost typically arrives around 11/05, about 221 frost-free days later.
Milburn sits in USDA Zone 8a (10 to 15°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
About 10 weeks of growing season left in Milburn before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/31 isn't a guarantee
03/31 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. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Milburn compares
About 221 days separate Milburn's last and first frost, putting it 12,596 of 40,283 ZIP codes nationally. Within OK, it ranks 136 of 764.
Learn more
local microclimates covers what one yard in Milburn can differ from the 73450 normal. zone vs. frost date covers why Zone 8a and Milburn's frost date answer different questions.