Rosston, OK 73855 Frost Dates
Frost dates for Rosston, OK, ZIP 73855
Typically, the last spring freeze lands around 04/20, roughly 235 days out. The first fall frost typically arrives around 10/22, about 183 frost-free days later.
The USDA Plant Hardiness Zone Map puts Rosston 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 Rosston has about 8 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 04/20 isn't a guarantee
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Rosston compares
About 183 days separate Rosston's last and first frost, putting it 24,048 of 40,283 ZIP codes nationally. Within OK, it ranks 761 of 764.
Learn more
the frost range explains how to read the range around Rosston's dates instead of trusting one, and local microclimates explains what one yard in Rosston can differ from the 73855 normal.