Sterling, OK 73567 Frost Dates
Frost dates for Sterling, OK, ZIP 73567
Around 03/26 is the usual last spring frost, about 210 days away. The first fall frost typically arrives around 11/07, about 225 frost-free days later.
Sterling 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 Sterling has about 10 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 Sterling's last frost
03/26 is the middle of 30 years of NOAA records, not a promise. Plant by 03/04 and you're betting against frost in roughly 9 years out of 10. 04/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sterling compares
At roughly 225 frost-free days, Sterling places 11,459 of 40,283 ZIP codes in this dataset. Within OK, it ranks 89 of 764.
Learn more
zone vs. frost date explains why Zone 7b and Sterling's frost date answer different questions, and the frost range explains how to read the range around Sterling's dates instead of trusting one.