Osage, OK 74020 Frost Dates
Frost dates for Osage, OK, ZIP 74020
The last spring frost here typically falls around 03/30, about 214 days from today. The first fall frost typically arrives around 11/04, about 220 frost-free days later.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Osage, not a forecast for this year.
What to do before the first frost
Zone 7a around Osage 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.
The actual range around Osage's last frost
03/30 is the middle of 30 years of NOAA records, not a promise. Plant by 03/10 and you're betting against frost in roughly 9 years out of 10. 04/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Osage compares
Osage's growing season runs about 220 days, ranking 12,905 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 209 of 764.
Learn more
local microclimates explains what one yard in Osage can differ from the 74020 normal, and zone vs. frost date explains why Zone 7a and Osage's frost date answer different questions.