Fort Towson, OK 74735 Frost Dates
Frost dates for Fort Towson, OK, ZIP 74735
Typically, the last spring freeze lands around 04/02, roughly 217 days out. The first fall frost typically arrives around 11/01, about 212 frost-free days later.
The USDA Plant Hardiness Zone Map puts Fort Towson in Zone 8a (10 to 15°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 8a around Fort Towson 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
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Fort Towson compares
About 212 days separate Fort Towson's last and first frost, putting it 14,662 of 40,283 ZIP codes nationally. Within OK, it ranks 433 of 764.
Learn more
zone vs. frost date explains why Zone 8a and Fort Towson's frost date answer different questions, and the frost range explains how to read the range around Fort Towson's dates instead of trusting one.