Ketchum, OK 74349 Frost Dates
Frost dates for Ketchum, OK, ZIP 74349
The last spring frost here typically falls around 04/07, about 222 days from today. The first fall frost typically arrives around 11/02, about 209 frost-free days later.
The USDA Plant Hardiness Zone Map puts Ketchum 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
Zone 7a around Ketchum 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.
Why 04/07 isn't a guarantee
04/07 is the middle of 30 years of NOAA records, not a promise. Plant by 03/22 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 Ketchum compares
Ketchum's growing season runs about 209 days, ranking 15,373 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 500 of 764.
Learn more
zone vs. frost date explains why Zone 7a and Ketchum's frost date answer different questions, and the frost range explains how to read the range around Ketchum's dates instead of trusting one.