Foss, OK 73647 Frost Dates
Frost dates for Foss, OK, ZIP 73647
The last spring frost here typically falls around 04/13, about 228 days from today. The first fall frost typically arrives around 10/28, about 197 frost-free days later.
Foss sits in USDA Zone 7b (5 to 10°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
Zone 7b around Foss 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.
The actual range around Foss's last frost
04/13 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 04/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Foss compares
Foss's growing season runs about 197 days, ranking 18,855 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 690 of 764.
Learn more
the frost range explains how to read the range around Foss's dates instead of trusting one, and local microclimates explains what one yard in Foss can differ from the 73647 normal.