Granite, OK 73547 Frost Dates
Frost dates for Granite, OK, ZIP 73547
Typically, the last spring freeze lands around 04/08, roughly 223 days out. The first fall frost typically arrives around 11/02, about 207 frost-free days later.
The USDA Plant Hardiness Zone Map puts Granite in Zone 7b (5 to 10°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
Zone 7b around Granite has about 9 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
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/21 and you're betting against frost in roughly 9 years out of 10. 04/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Granite compares
Granite's growing season runs about 207 days, ranking 15,841 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 536 of 764.
Learn more
local microclimates explains what one yard in Granite can differ from the 73547 normal, and zone vs. frost date explains why Zone 7b and Granite's frost date answer different questions.