Bartlesville, OK 74004 Frost Dates
When can you plant in Bartlesville, OK?
Typically, the last spring freeze lands around 04/11, roughly 226 days out. The first fall frost typically arrives around 10/24, about 195 frost-free days later.
The USDA Plant Hardiness Zone Map puts Bartlesville in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in Bartlesville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/11 is the middle of 30 years of NOAA records, not a promise. Plant by 03/27 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bartlesville compares
At roughly 195 frost-free days, Bartlesville places 19,168 of 40,283 ZIP codes in this dataset. Within OK, it ranks 706 of 764.
Learn more
local microclimates covers what one yard in Bartlesville can differ from the 74004 normal. zone vs. frost date covers why Zone 7a and Bartlesville's frost date answer different questions.